I'm not going to vote because I haven't gotten to try most of the games recently. (I don't have hardware acceleration so 3D games are out.) I recently enjoyed playing pingus, with all the new levels from the 0.7.6 release. Warzone 2100 was an awesome game when I tried it out last year; I hear it is under active development with a recent 3.1 beta release. Anybody given that a try yet?

my Linux Game of the year
not OpenSource
Dungeons of Dredmor - shame very good oldschool favor nethack
Hazeron (hazeron.com) - quite good SPACE EMPIRE mmo.. a few steps in right direction and could be next privateer/X3/tachyoon.
Xenonauts - promising ufo series spin-off
OpenSource
OpenTTD - voted
Precipcle of Drakness(??) and Trine - i think it was some part of humble bundle with sources, games that give a good view on native gaming in linux and thu not be forgotten.
..

i haven't time to check state of older ports(GemRB etc) and new games this year.. + a few linux game sources where closed or outdated(getdeb/some game managers etc..).. i hope 2013 will be better .

I'm surprised noone has said Fuego or GNUGo. I thought Linux users liked wéiqí, but maybe you are all chess players (i see GNUChess is there!).

Even though I pestered the admin to add TWM to another vote, I have to say Fuego.

Your package manager is more likely to have GNUGo, but it hasn't been updated for a few years and Fuego is at least 10 stones stronger (using a Monte Carlo rather than heuristic algorithm).

I only recognized Freeciv in that list anyway. Not that Freeciv is bad, but a computer player playing at >1 dan is amazing considering how complex the game is (a minimax search would be impossible on a 19x19 board, or take a million years, but I think it has been solved on 5x5 -- which is too small to be meaningful). A few years ago it would've been unthinkable. The Monte Carlo algorithm applied to computer wéiqí was a breakthrough that allowed them to increase in strength from low single digit kyu to dan level.

Best part is it's LGPL and only requires some boost libraries. Works on Debian Squeeze.

Happy new year.

Wesnoth yesterday - Wesnoth today - Wesnoth forever.

Warsow, which is open source for the code, but not for the art assets, which are reserved for Warsow under license. That fact probably scares away potential Linux players . . .

I'm addicted to Texas Hold'em PokerTH.

Battle for Wesnoth. It's great all around. The first few missions are kind of slow, but the next few pick up the pace a bit so you can actually get into it. Another benefit is that it runs great on my not so awesome hardware.

+1

Poor man's XCOM. Also I love this game because I have such slow hands.

Urban Terror?

Super Maryo Chronicles if there was.

MegaMek, it uses the GNU license and is hosted on sourceforge! It will probably lose though, great unofficial battletech client. several different servers with different "themes" to play on.

Battle for Wesnoth

I haven't played any good first person shooter game on linux but played a lot in windows. Can anyone suggest me a good one ?

The latest version messed up the trucks. They are "polite" and don't jostle for position in order to build something. So, two trucks out of four might actually be building while the other two are stuck behind them. Yes, I have complained.

So, I grab an older version and blow the stuffings out of the invading hordes, late at night. It's a terrific time waster when you're bored. I highly recommend it, and it plays very well as a single player against multiple AI's. Ric

Nobody likes Enigma? That is my favorite.

I've never managed to find people to play with on Urban Terror. Is the community active at all?