To mark the occasion all three games are on sale, with Killing Floor priced at $13.99 (33 percent off) and both Altitude and Madballs available for $4.99 each. Plus, Altitude will be free to play this weekend. Incidentally, these sales apply to the PC versions as well.
Find a full list of this week's new Mac games after the break.
New Steam for Mac releases:
- Madballs in Babo: Invasion
- Killing Floor
- Sam & Max - Season Two (also available in individual episodes)
- Simplz Zoo
- Eschalon: Book 1
- Hearts of Iron 3
- Europa Universalis 3 (complete)