The mouse click. That's all what you need to interact with the modules and hope to open the door. 25 rooms with many procedural puzzles. A game developed by one person in 6 months. If you are stuck, you can see the solution for each room in videos here: https://www.youtube.com/playlist?list=PLQh0lMYzOtx3eNbYroERkytk52muXkNgm
