
vrc over under game manual
VRC Over Under Game Manual: A Comprehensive Overview (2023-2024 Season)
This manual serves as the definitive guide for the VRC Over Under competition, detailing rules, field setup, and scoring for teams, referees, and partners.
Welcome to the official VRC Over Under Game Manual! This comprehensive document is meticulously crafted to serve as the primary resource for all participants in the 2023-2024 VEX Robotics Competition season. It’s designed for a diverse audience – including student robotics teams, dedicated event referees, and essential event partners – ensuring everyone has access to the same critical information.
Within these pages, you’ll discover detailed explanations of the game’s objectives, the intricacies of scoring mechanisms, and precise specifications for the competition field. The manual provides a clear understanding of the rules governing match play, robot inspection criteria, and potential penalties. It’s your ultimate guide to navigating the challenges and maximizing success in the VRC Over Under game, fostering fair play and strategic gameplay.
Purpose and Audience of the Manual
The core purpose of this VRC Over Under Game Manual is to establish a standardized and equitable playing field for all competing teams. It aims to provide crystal-clear guidelines regarding game rules, robot specifications, and scoring procedures, minimizing ambiguity and ensuring fair competition. This document serves as the definitive reference point for resolving disputes and upholding the integrity of the VRC Over Under season.
The intended audience is threefold: student robotics teams seeking to understand the game’s nuances and build competitive robots; event referees responsible for enforcing the rules and maintaining fair play; and event partners involved in organizing and executing VRC competitions. By catering to these diverse groups, the manual facilitates a smooth and successful competition experience for everyone involved.

Key Updates and Revisions (as of 04/22/2026)
As of today, April 22nd, 2026, several key revisions have been implemented to the VRC Over Under Game Manual. These updates primarily focus on clarifying ambiguities within the robot inspection criteria, specifically regarding component restrictions and legal configurations. Further detail has been added to define what constitutes a non-compliant robot, ensuring consistent application of inspection rules across all events.
Additionally, minor adjustments have been made to the documentation referencing ISO standards related to testing methods under load. These refinements aim to enhance clarity and precision in technical specifications. Teams are strongly encouraged to thoroughly review the updated manual to ensure full compliance with the latest regulations and avoid potential disqualification during competition. The engineering guide has also been updated to 254 pages.

Game Objectives and Scoring
The core objective is to score Triballs in Goals and elevate robots on Elevation Bars, strategically maximizing points throughout the match duration.
Scoring Elements: Triballs and Goals
Triballs are the primary scoring objects in VRC Over Under, with points awarded for successfully depositing them into the two Goals located on the field; These sixty (60) Triballs can be scored by either alliance within their respective offensive zones, contributing significantly to their overall score.
Goals themselves are crucial scoring receptacles; each Triball deposited earns points, and strategic positioning of the Goals influences gameplay. Alliance-specific scoring is key, as only Triballs within an alliance’s control zone count towards their total.
Effective robot designs will prioritize efficient Triball intake, transport, and accurate shooting mechanisms to maximize scoring opportunities throughout the match. Understanding the scoring dynamics related to Triballs and Goals is fundamental for competitive success.
Elevation Bars and End-Game Scoring
Elevation Bars represent a significant end-game scoring opportunity in VRC Over Under. Located on either side of the Barrier, these alliance-specific structures allow robots to elevate themselves during the final seconds of the match. Points are awarded based on the number of robots an alliance successfully elevates and sustains on the bars.
Strategic end-game play focusing on Elevation Bar access is crucial, as it can dramatically shift the match outcome. Robot designs should incorporate mechanisms enabling reliable climbing and secure attachment to the bars.
Mastering end-game scoring through Elevation Bars requires coordinated alliance strategy and robust robot capabilities, potentially securing a substantial point advantage.
Alliance Strategy and Scoring Dynamics
Successful VRC Over Under alliances require coordinated strategies maximizing both Triball scoring and Elevation Bar control. Teams must balance offensive efforts – efficiently scoring Triballs in Goals – with defensive maneuvers to hinder opponent progress. Effective communication and role assignment within the alliance are paramount.
Scoring dynamics favor alliances that consistently score Triballs while simultaneously preparing for end-game Elevation Bar climbs. Prioritizing both aspects ensures a well-rounded scoring profile.
Understanding the interplay between Triball scoring, defensive play, and end-game elevation is key to developing a winning alliance strategy, ultimately dictating match outcomes.

Field Setup and Components
The VRC Over Under field comprises a Barrier dividing alliance zones, along with Triballs, Goals, and Elevation Bars for strategic gameplay and scoring opportunities.
Field Dimensions and Layout
The VRC Over Under field presents a rectangular arena, meticulously designed for dynamic robot interactions and strategic gameplay. Measuring 12 feet long and 8 feet wide, the field is bisected by a central Barrier, effectively creating distinct Alliance zones. Each zone provides ample space for robot maneuvering and offensive/defensive strategies.

Crucially, the field incorporates two sets of Elevation Bars positioned on either side of the Barrier, specifically within each Alliance’s zone. These bars are integral to end-game scoring, requiring robots to elevate themselves. The precise dimensions and placement of these bars are detailed within the official VEX Robotics documentation, ensuring consistent gameplay across all events. Understanding this layout is paramount for successful team strategy and robot design.
Triball Quantity and Distribution
A core element of the VRC Over Under game is the strategic manipulation of Triballs. The field begins each match with a total of sixty (60) Triballs distributed across designated starting locations. These locations are carefully chosen to encourage initial scrambling and early-match engagement between the competing Alliances.
The initial distribution isn’t uniform; some areas will have a higher concentration of Triballs than others, demanding adaptable robot designs and quick decision-making. Teams must efficiently gather these Triballs and strategically score them into the opposing Alliance’s Goal. Understanding the initial placement and anticipating opponent movements are key to maximizing scoring opportunities throughout the match duration. Effective Triball management is crucial for victory.
Goal Specifications and Placement
The Goals are central scoring objectives in the VRC Over Under competition. Each field features two (2) Goals, one positioned within each Alliance’s Offensive Zone. These Goals are designed to accommodate the scoring of Triballs, with a specific internal volume and opening dimensions detailed in the official game specifications.
Goal placement is symmetrical, ensuring fairness between the Red and Blue Alliances. They are strategically located to encourage both direct shooting and coordinated passing plays. Teams must develop robots capable of accurately delivering Triballs into these Goals to accumulate points. Understanding the Goal’s dimensions and optimizing scoring trajectories are vital for competitive success throughout the season.
Elevation Bar Details and Functionality
Elevation Bars are crucial for end-game scoring in VRC Over Under. Each Alliance possesses a set of these bars, located on either side of the central Barrier. These bars offer significant point values when a robot is elevated above them during the final seconds of the match.
The bars are designed to be climbed or lifted onto, requiring robots to possess robust lifting mechanisms and strategic end-game plans. Specific height requirements and corresponding point values are outlined in the official rules. Successful elevation demonstrates a team’s engineering prowess and ability to execute complex maneuvers under pressure, potentially securing victory.

The Barrier: Defining Alliance Zones
The Barrier is a central component of the VRC Over Under field, physically dividing the playing area into two distinct Alliance zones – Red and Blue. This structure fundamentally shapes gameplay, dictating strategic positioning and influencing scoring opportunities. The Barrier prevents direct interference between opposing Alliances during active play, fostering focused competition.
Alliance-specific Elevation Bars are positioned adjacent to the Barrier, further defining each zone. Understanding the Barrier’s boundaries and its impact on robot movement is essential for developing effective offensive and defensive strategies. Teams must navigate their zone efficiently while attempting to score and defend against the opposing Alliance.

Robot Design and Inspection
Robot construction must adhere strictly to VRC inspection criteria, ensuring fair play and safety; components must be legal and configurations compliant.
VRC Inspection Criteria: Ensuring Compliance
Rigorous inspection is paramount for VRC Over Under robots, guaranteeing adherence to all published rules and promoting a level playing field. ALL robot components must meet specified criteria; those failing inspection are deemed non-compliant and ineligible for match play. Inspectors meticulously verify dimensions, weight limits, and functionality of all systems.
Particular attention is paid to the legality of materials, the secure attachment of parts, and the absence of prohibited components. Teams are responsible for self-inspection prior to events, utilizing the official VEX Robotics Engineering Guide as a primary resource. A successful inspection confirms the robot’s safety and adherence to the spirit of fair competition, allowing teams to confidently participate and showcase their engineering prowess.
Robot Component Restrictions
The VRC Over Under competition enforces strict limitations on robot components, ensuring fair play and promoting resourceful engineering. Certain materials and functionalities are explicitly prohibited to maintain safety and prevent undue competitive advantages. Teams must adhere to size and weight restrictions for all robot elements, including motors, controllers, and structural components.
Specifically, the rules detail limitations on the use of custom circuitry and pre-built mechanisms. The VEX Robotics Engineering Guide provides a comprehensive list of legal and illegal components, alongside detailed guidelines for compliant construction. Understanding these restrictions is crucial for successful robot design and avoiding disqualification during the inspection process. Careful component selection is key to building a competitive and legally sound robot.
Legal vs. Illegal Robot Configurations
Distinguishing between legal and illegal robot configurations is paramount for VRC Over Under teams. The VEX Robotics Competition emphasizes adherence to detailed rules regarding robot construction and functionality. Configurations violating these rules can lead to inspection failures and potential disqualification. Illegal configurations often involve exceeding size or weight limits, utilizing prohibited components, or implementing mechanisms that damage the field or opposing robots.
Teams must meticulously review the VEX Robotics Engineering Guide and official Q&A forums to ensure compliance. Common violations include improperly secured components and mechanisms that interfere with Triball scoring. A successful robot design balances competitive functionality with strict adherence to the established legal framework, maximizing performance within the competition’s boundaries.

Match Play and Rules
Match play involves a driver control and autonomous period, governed by specific timing rules and subject to penalties for fouls or disqualifying actions.
Match Duration and Timing
A VRC Over Under match consists of two distinct periods: the Autonomous Period and the Driver Control Period. The Autonomous Period, lasting fifteen (15) seconds, initiates the match, where robots operate pre-programmed instructions without driver intervention. Following the Autonomous Period, the Driver Control Period commences, extending for one minute and thirty seconds (90 seconds).
During this phase, drivers directly control their robots to score Triballs and manipulate Elevation Bars. A brief ten (10) second pre-match loading period allows teams to position their robots. The match concludes with a final scoring assessment, determining the winning alliance based on accumulated points. Precise adherence to these time constraints is crucial for fair competition and strategic gameplay, ensuring all teams have equal opportunities to demonstrate their robotic capabilities.
Driver Control and Autonomous Periods
The Autonomous Period demands pre-programmed robot actions, executed without driver input for the initial fifteen seconds. Successful autonomous routines can significantly impact a team’s score, focusing on Triball acquisition and initial Goal scoring. Transitioning to the ninety-second Driver Control Period, teams gain direct command over their robots, employing strategic maneuvers to maximize point accumulation.

This period emphasizes driver skill, robot design, and alliance coordination. Effective communication and precise control are paramount. Teams must strategically score Triballs, defend their zones, and attempt to elevate their robots on the Elevation Bars. The interplay between autonomous preparation and skillful driver control defines success in VRC Over Under, demanding a balanced approach to robot design and gameplay strategy.
Penalties and Fouls
VRC Over Under enforces strict rules regarding robot interaction and field manipulation. Infringements result in penalties, impacting match scores and potentially leading to disqualification. Common fouls include illegally contacting the opposing alliance’s robot, interfering with their scoring attempts, or damaging field elements. These infractions typically incur point deductions or temporary robot restrictions.
More severe violations, such as intentional damage or unsafe robot behavior, can trigger immediate disqualification. Referees meticulously monitor matches, applying penalties consistently to ensure fair play. Understanding these rules is crucial for all teams; proactive adherence minimizes risks and promotes a competitive, respectful environment; Teams must prioritize safe and legal operation throughout the competition.
Disqualification Criteria
Disqualification in VRC Over Under represents the most severe penalty, removing a team from further match participation. This occurs with intentional damage to opponents or the field, repeated unsafe robot behavior despite warnings, or blatant rule violations. Utilizing illegal robot components, exceeding size or weight limits, or circumventing inspection procedures also lead to disqualification.
Furthermore, unsportsmanlike conduct, harassment, or deliberate interference with event operations are grounds for immediate removal. Referees have the authority to disqualify teams exhibiting such behavior. Understanding these criteria is paramount; teams must ensure full compliance with all regulations to avoid disqualification and maintain a positive competitive experience.

Resources and Support
Access the official VEX Robotics website, VEX Forum, and Engineering Guide for comprehensive documentation, community support, and crucial updates regarding the game.
Official VEX Robotics Website
The official VEX Robotics website (vexrobotics.com) is the primary hub for all VRC Over Under related information. Here, teams can find the complete and most up-to-date game manual, including detailed rules, scoring clarifications, and frequently asked questions. It also hosts essential resources like robot build guides, programming tutorials, and competition registration details.
Furthermore, the website provides access to downloadable CAD files for the field, allowing teams to virtually simulate matches and plan their strategies. Event information, including schedules and locations, is readily available, ensuring teams stay informed about upcoming competitions. Regularly checking the VEX Robotics website is crucial for staying current with any rule updates or important announcements throughout the season, guaranteeing a competitive edge.
VEX Forum and Community Support
The VEX Forum (vexforum.com) is an invaluable resource for teams navigating the VRC Over Under season. This online platform fosters a vibrant community where teams can connect, share ideas, and seek assistance from experienced mentors and fellow competitors. It’s a perfect place to ask clarifying questions about the game manual, discuss robot design challenges, and troubleshoot programming issues.
Beyond direct support, the forum archives a wealth of knowledge from previous seasons, offering insights into successful strategies and common pitfalls. Teams can also find regional and team-specific discussions, facilitating local collaboration. Active participation in the VEX Forum significantly enhances a team’s learning experience and problem-solving capabilities throughout the competition.
Engineering Guide and Documentation
The VEX Robotics Over Under Engineering Guide is a comprehensive, 254-page document providing in-depth technical information for teams. It delves into crucial aspects of robot design, construction, and programming, offering detailed explanations and practical examples. This guide complements the game manual by translating rules into actionable engineering principles.
Furthermore, it includes sections on VEX V5 Robotics, covering component specifications, software functionalities, and best practices for building robust and reliable robots. The documentation also references relevant ISO standards, such as ISO 75-2:2013, ensuring adherence to quality and safety guidelines. Accessing and utilizing this guide is essential for teams aiming for competitive success.