Savage 2 - A Tortured Soul is a free game that you can download online. (http://savage2.com/en/main.php)

This controller only does the basics of the game. (Attack, swith between ranged and melee and move ofc.)

You move by moving your index finger towards or away from the cam.
Your mouse/camera is moved by your thumb.
The rest of the commands are following:

Index right: 1(melee weapon)
Index left: 2 (usually ranged weapon)
Index down: Attack!