Xbox 360/Xbox one controllers are recommended, but you can use a PS4 Controller, and a Nintendo Switch pro controller if you know what you're doing. If you don't have one, don't worry!!! the game is still playable, it just might be difficult or confusing depending on the controls. This makes the game easier to play, since it was made for controllers in mind. For reference, the unleashed mod is 2.3GB At least 15-20GB Hard drive or space remaining to put mods in.You can get away with this though, just by running the game at a lower resolution and playing around with your system. If you are running this game on a laptop, you might have performance issues due to this. The project unleashed mod is quite demanding, which can lead to a poor experience, or low frame rates. Sonic generations struggles to run on integrated graphics, either it be AMD or Intel. An internet connection (how are you reading this?).Compatibility is best on the latest Windows 10 though. Windows 10, but it can work on older systems.This game is quite old, but it can still be demanding on lower end systems. In order to make sure you can properly play this mod, make sure you have the following: You might be running into compatibility issues later in the guide if you do not meed these standards.