Muslim Massacre. Satire or just for shock value? You decide. Windows only.
Pixeljam (the folks responsible for the retro flash classic Gamma Bros) have just released a new game: Dino Run. Control your dinosaur and escape the wall of doom.
It seems that everyone wants to post their toplists for free game recommendations at the moment. First up is Gnomes' Lair with 100 excellent free games in bloom. Can't forget 1up with 101 Free Games 2008. And last but still well worth checking out is Indiegames' (formerly Indygamer) Best Freeware Arcade Games 2007 and Best Freeware Adventure Games 2007. If that isn't enough for you, also worth taking a gander at is Javet's Freeware Game of the Day thread on Tigsource.
Many freeware games were released in 2007. How to seperate the crap from the good stuff? It can be a little hard admittedly but this thread on the Tigsource forums might help you. With around 30 categories (and a winner announced for each) ranging from 'Best Shooter' to 'Best Bosses,' there's probably something there to please just about anyone.
Alex Adventure and Space Barnacle are both freeware platformers that have small cult followings but have possibly been overlooked by a wider audience.