Merge pull request #132 from hypercephalickitten/master

LEVEL 22 is working.
Hide Steamworks SDK Redist
Fistful of Frags works

Tested on Ubuntu 14.04.
Merge pull request #133 from suitablehost/master

Fistful of Frags works
Added The Impossible Game

The Impossible Game 251630 works on Linux
Merge pull request #134 from RyuzakiKK/patch-1

Added The Impossible Game
Al Emmo and the Lost Dutchman's Mine works.