Games you should try, and probably haven't.

[Z_the_slayer]

Games so far, so that new people won't get frustrated by having to read the ENTIRE FRIGGIN' THREAD:

League of Legends : Free Team based Action/RPG PVP game.
Iji : Free 2d RPG platformer, like Castlevania + System Shock 2.
Battleships Forever : Free 2d Tactical space RTS.
Terraria : 2d RPG-esc combat-oriented platformer Minecraft.
Skydrift : Flying kart style racer.
Orcs Must Die! : Third person fantasy shooter / tower defense.
Shadow of the Colossus : Fight monsters that are REALLY REALLY BIG, good artwork too.
Ico : Well made minimalist 3d platformer. Has puzzles and fighting.
Shin Megami Tensei : First person RPG dungeon crawler.
Journey : 3d platformer, with an extremely high emphasis on artwork and emotion.
Moonbreakers : Free spaceship combat First Person shooter.
Super Monday Night Combat : Free Third Person shooter, with multiplayer and strategy.
Freespace 2 : 3d Tactical space ship RTS.
Lone Survivor : 2d platformer horror.
Gemini Rue : Point and Click adventure with a more serious Sci-Fi tone.
Stacking : Russian puzzle game.
Fallout Online : Multiplayer PvP based Tactics game, similarly to Fallouts 1 + 2.
UnEpic : Comedic 2d RPG action adventure game, similar to a funny Castlevania
Alan Wake : Creative and Creepy action game
Magicka : Diablo-esc dungeon crawler that allows you to mix different kinds of magic for experimental results.
Shatter : Action Breakout game with great mechanics. Even has boss fights.
Psychonauts : 3d Platformer with extremely in-depth storytelling.
Stuntman Ignition : Well made driving game
Audiosurf : Choose an MP3 and ride the beat of the song.
Day Z mod for Arma : turns the game into a Third / First Person zombie survival horror game

I'll add more as they come along.

 

[Z_the_slayer]

Just got back after trying out UnEpic. Nice fun game, I like that the quests are really difficult to do. You only level up about once an hour, and it usually takes longer than that.

I got to a certain point where I realized that my life was constantly draining. Am I poisoned? No. Is my frost elemental pet hurting me with some negative aura thing to keep it from being overpowered (because it IS pretty OP). No, because I just sent it away.

Hmmm...

I thought maybe the game was bugged, until I checked my inventory. After dinking around in some sewers, apparently some leeches found their way into my inventory, making me lose life over time. Very creative game. Also, very funny. There's a reference to another game every 5 minutes. You have a spirit that is stuck inside of you that is really pissed off. You decide to call him Zeratul from Starcraft. Upon killing your first snake, he goes, "Snake? SNAKE? SNAAAAAAAKE!"