Bad collision detection in a Gorilla Tag fan game can occur due to improper implementation of physics, inaccurate hitboxes, or engine limitations. Gorilla Tag relies heavily on precise hand-based movement, meaning collisions need to be responsive and consistent. If hitboxes are too small, players might phase through walls or objects, making movement unreliable. On the other hand, oversized or poorly placed hitboxes can cause players to get stuck, bounce unpredictably, or experience frustrating movement inconsistencies. Additionally, if the game’s physics engine doesn’t handle fast hand movements properly, it can result in clipping, delayed collisions, or jittery interactions with surfaces. Without proper fine-tuning and continuous testing, these issues can make traversal feel awkward and break the core gameplay experience.