This is completely opinionated, but I tried to get what are quite possibly what I feel the 8 best freeware games made + released this year, and put them into 1 topic. You should check all these rad games out!!
Best Original Game:
Mr. Blocko: Super Tournament Edition by PerfectRun
Mr. Blocko is probably the most original game I've seen this year. It's like Tetris but super amazing cool, has rad multiplayer, runs great, can be customized pretty heavily, and was made by some of GamingW's best! Give it a try.
Site:
http://www.perfectrun.net/index.php?id=pageget/mrblockoBest Schmup:
Return to Sector 9 by Pug Fugly Games
R2S9 is an awesome schmup that has tons of unlockables, plays flawlessly, has tons of crazy game modes, ships, etc to unlock. It is awesome, and its very small download too!
Site:
http://www.pugfuglygames.com/Game.php?game=10Best Fighting Game:
Toribash 3.0 by Hampus Söderström
Toribash is innovative in that you fully control how your person fights, by controlling each of his individual body parts. Spin kicks, mid air punches, grabbing your enemy's arm and ripping it off...all possible in Toribash. Check it out!
Site:
www.toribash.comBest BossesBanana Nababa by Lazrael
Another amazing game by a GamingW'er, Lazrael's Banana Nababa is a fun game where you kill just bosses...but awesome bosses they are! A fun filled amazing game. Definitely recommended.
Site:
http://www.gamingw.net/forums/index.php?topic=63350Best Asteroids Clone:
Echoes by Binary Zoo Studios
Echoes is like Asteroids of course, except also like Geometry Wars, with a crazy blue, and while its not very complex, it is very cool. There isn't much to unlock, but it is very addictive and hard to put down.
Site:
http://www.binaryzoo.com/games/echoes/index.htmBest RPG:
Last Scenario by SCF
Last Scenario is everything an RPG Maker game should be. Sure, it doesn't have very many fancy custom graphics, or completely "ejaculate-in-your-pants BlindMind style" mapping, but what it does have is an incredible storyline, which is very well told, with a cool completely original mini-game that is fun and gives good rewards, with tons of optional bonus content. A keeper.
EDIT: Also it starts out rather slow, but it picks up.
Site:
http://indygamer.blogspot.com/2007/05/last-scenario.htmlDownload:
http://informationhigh.net/moonphase/Last%20Scenario%20v121.rarBest Strategy Game:
Battleships Forever by WYRDYSM GAMES
Battleships Forever is an RTS that features some cool innovative ability's, all made in Game Maker by 1 guy. It's pretty rad if you like RTS, although there is no multiplayer.

Site:
http://www.wyrdysm.com/games.phpBest Puzzle Game:
AcidBomb: Rearmed by Vertigo Games
A basic puzzler, well crafted. Great puzzles, a ticking timer, and an
AMAZING soundtrack.
Site:
http://www.vertigogaming.net/acidbomb2.htmThese IMO, are all freeware games that really stand above the rest, do their genre justice, and show what a bunch of innovative people can do in their spare time.
Good stuff, you owe it to yourself to check these suckers out!