@vincent Depends on what you want to make! Hobby project or eventual commercial project? If the former and you're just experimenting I'd say something like OpenFrameworks would be a great tool to start with, especially if you know C++. The games listed in their tutorial include some pretty successful ones (Zach Gage's stuff in particular). Unity is a beast and it is not at all easy to just get in, start coding and drawing things to the screen to quickly sketch ideas. So if you're a game designer first and aiming to publish a professional game, Unity's great. If you're more of a programmer and prefer to sketch with code, OpenFrameworks is great, especially since it supports several platforms (which is one of the common reasons people choose Unity). I have nothing against Unity btw.