Run custom programs in a Steam Game Proton context

I’ve always been a big fan of HITMAN 3 by IOI Interactive. After switching to Linux, I was able to play the game without any problems thanks to Valve’s Proton. Thanks Valve! Every now and then, however, I want to try out certain passages or functions, or just go completely crazy. Under Windows, I had a trainer that patched the game and gave me infinite ammunition, for example. But this trainer wasn’t available on Linux. ...

October 3, 2025