VEX Robotics Over Under is the 2023–2024 challenge where two alliances compete to score acorn-shaped plastic "triballs" into netted goals and designated offensive zones. Played on a field divided by a central PVC barrier, the game focuses on strategic movement and possession limits, as robots can only hold one triball at a time. The match ends with a high-stakes Elevation challenge, where teams earn points by hanging their robots from tiered horizontal bars, with the highest-reaching robots securing the most points for their alliance.