I made a building game that USED to work fine but now if I playtest it Roblox Studio stops responding and if I play the real game on the website I get this: https://ibb.co/RvQYzNG
resolved by Soban06: Have you added a while loop or something without a wait? That could be the case because the while loop keeps repeating on and on and on forever and causes the game to crash. And as @Internal_1 said, that could be the case too.