I and another person made a game. In which I, as a scripter, rewrote the code for the entire game system.
When the game started to gain popularity, I monitored, checked, and noticed violations of Roblox’s terms of use in the game. I informed him, but he deliberately ignored me. At the same time I also noticed he was trying to convert robux to cash through group funds illegally.
There was a conflict between us, he removed me from the game, but still tried to use my source code.
I used github as a source code repository and code commit history.
So
Can I request to remove the game?
How long will this take?
Well if he is using code that isn’t his, without permission (given that he breached the ‘contract’ and removed you and stuff), then you should be able to file a DMCA against him.