You&#x27;re right - you can never prevent that. Which means your client needs to offer it to keep it from becoming an advantage. If the players are already bright, recognizable colours you&#x27;re basically already there. Transparent walls don&#x27;t help when the server doesn&#x27;t send you the enemies hiding behind them until the very instant they pop out. And if you&#x27;re only spoofing mouse movement, well, that is getting pretty high risk, you may have a slight advantage, but human players will still be able to kill you without too much to effort. And I think that&#x27;s the main thing anticheat should be preventing.