FPS Creator X10 is described as 'Prepare to enter the exciting world of game making, as you create entire worlds from your imagination and populate them with anything you want. Add in your very own squad to fight by your side or go it alone' and is an app. There are more than 25 alternatives to FPS Creator X10 for a variety of platforms, including Windows, Linux, Mac, Android and iPhone. The best alternative is Unity, which is free. Other great apps like FPS Creator X10 are GDevelop, Scratch, CRYENGINE and Ren'Py.