OCCRA provides a FIRST-Adjacent, yet less complicated robotics challenge every year, to give teams something to do during their offseason. To compete in these games, students are tasked with building a robot capable of playing the given game to the best of their ability. Unlike FRC, OCCRA is completely student-driven; mentors may only provide guidance, and cannot directly work on the robot.
Students must work as a team, using their knowledge of mechanical and electrical engineering, CAD, and programming to design and build their robots. Each year OCCRA gives a new objective for teams to compete in so students can learn practical knowledge of mechanics, engineering, programming, and physics in a new, fun way. Walled Lake Robotics 308 and 7178 both participate in OCCRA every year, along with various other FRC teams in Oakland County.