ok, the thing is: even if you want to make a psychological horror game, making another program stopping working, or limiting what tasks the task manager can manage or not is a bit too much.
Just think about it: you're talking about making a game where one of the features is to make the task manager don't work on the main menu of your game. Other person could make a similar game, except the task manager is always locked, even inside the game. This person could also make it's game purposefully laggy, destroying the computer resources. And i also think that making your game load on initialization is easier than breaking the task manager. There could also be the possiblity of a "pay to remove this game from your computer", and an expensive IAP in the game. Now that game is more of a ransomware than a game, even if someone could argue it has the same features as your game :>
Also, there is the topic "why should your game stop the task manager". Do you don't want players to kill the task of your game? but realistically, why? people only kill unresponsive tasks, any normal player would go to the quit of the menu to leave the game. Or at most use alt + f4.
The idea of stopping the task manager, even if just for your game, will always be too hard to do, too uneeded, and too risky, as your game could be a virus or something.




















