i can't play the game cause when i download it it gives me files and i don't understand how to play it.
Well, it's Windows only, so make sure you're on Windows 10.2nd, right click on the .zip and extract it. Once that's done, inside the folder click Siege Physics.exe to open it.
Oh yeah, and if it says Windows has protected your PC, click more info, and then click Run Anyway.