Generally, the prevalence of eastern European animation in the industry.
Little King's Story: Every boss fight was a treat and there were so many moments of absolutely adoring attention throughout, but I loved realizing that the ex-Love-De-Lic guys honored Moon: Remix RPG Adventure with the endgame.
http://www.youtube.com/watch?v=tUj-Bo9NQGs
http://www.youtube.com/watch?v=ekwjMiaMdLI
http://www.youtube.com/watch?v=_MWRQ2BSTt4
The secret music video by Love-De-Lic's/Vanpool's main art guy and Swimmingpoo1 was lovely.
http://www.youtube.com/watch?v=0xVtHbWJLH4
Inazuma 11 2: Down 3-0 in the 2nd-to-last match due to lucky shots and my defense (which I concentrated on) botching their special maneuvers, I rallied after switching formations and scored the game winner from yards away from the box.
http://www.youtube.com/watch?v=s6AFy5Ldizk
Half-Minute Hero: The hilarious introduction movie, Will This War Ever End, running straight into the title screen butt-rock Main Theme set the tongue-in-cheek tone flawlessly.
http://www.youtube.com/watch?v=OAxd73pbuwg
Machinarium: Robot Band Tune charmed me. I was not expecting Machinarium to evoke memories of The Neverhood series, given its influences.
http://www.youtube.com/watch?v=kRW1qnFXKxY
Retro Game Challenge 2: Every minute of The Chief Is A Great Detective Part 1 And Part 2 was brilliant.
http://www.nicovideo.jp/watch/sm6382177
http://www.nicovideo.jp/watch/sm6382220
Muramasa: The Demon Blade: Momohime Versus Raijin felt like Strider in its risk/reward balance.
http://www.youtube.com/watch?v=SdZluO0IS_M
Mario And Luigi: Bowser's Inside Story: I wish the whole game was as hard as the gauntlet, even if the combat isn't on par with Partners In Time's.
http://www.youtube.com/watch?v=W9w4DqCoIEk
http://www.youtube.com/watch?v=74by6OTahAg
Sakura Note: The Future Connected To The Present: The soundtrack is Uematsu's best in years, and the endgame is rather melancholic in a sweet way.
http://www.youtube.com/watch?v=7x7jyadBt-k
http://www.youtube.com/watch?v=1orKfPgCuUA
http://www.youtube.com/watch?v=nZKMWFU2hEA
http://www.youtube.com/watch?v=7KvmF1vBMOI
http://www.youtube.com/watch?v=-Vxnqs__Nzc
http://www.youtube.com/watch?v=uMQHUtmWB-0
http://www.youtube.com/watch?v=RsIBeQdXLRw
http://www.youtube.com/watch?v=1P07Go8Q0Fw
http://www.youtube.com/watch?v=L9oZ-lcmQnM
http://www.youtube.com/watch?v=U7DEtANhceQ
http://www.youtube.com/watch?v=7x7jyadBt-k
http://www.youtube.com/watch?v=twNNutBl2Ns
http://www.youtube.com/watch?v=d3MrL0p6twE
Tekken 6: I took all comers at my college and won for about 1 1/2 hours straight with Sergei, Bruce, Emily, King, Asuka, and Zafina. I've never played a better Sergei, I think. I was fencing while they were wearing cement shoes.
http://www.youtube.com/watch?v=AWnXHrrW7a8
7th Dragon: The first battle where you hear Battlefield - Swords Bursting instantly transports me to the days of 2-d JRPG glory. I was breathless for a moment.
http://www.youtube.com/watch?v=GhIy2j9pYSo
http://www.youtube.com/watch?v=uHQYqV1SSWI
Ripening Tingle's Balloon Trip Of Love: All of the endings are hilarious, and 1 is a direct parody of Endonesia. I wub you, Taro Kudou.
http://www.youtube.com/watch?v=XbBWobByKB0
Another Code: R: A Journey Into Lost Memories
I suppose it's an odd thing to comment on, but I was just really on my game for puzzles this year. I play Cing's games for the atmosphere as much as the puzzles, but there were some peculiar/tricky problems this time. I demolished every challenge the game had (even though it's not that hard) and blazed through the gameplay portions. It's satisfying to clear the bar by a foot, sometimes.
http://www.youtube.com/watch?v=OqbGLFkcfPQ
Chibi-Robo: Welcome Home: Questions that will haunt me in 2010: Who ate the ham? Who is the sink shark?
http://www.youtube.com/watch?v=Te0yV_YAquE
NHL 10: I always focus on defense and push quick transitions, so taking a beating from my friend only to pull off 2 quick full-rink break goals in the last 3 minutes to win the game shouldn't have been a surprise. Instead, he didn't talk to me for the rest of the night. ...He's fine, seriously.
http://www.youtube.com/watch?v=LunqIPNTF0A
Tales Of Monkey Island: Manatees. MANATEES.
http://www.youtube.com/watch?v=9ERVVL-rN1M
Puyo Puyo 7: I'll admit it. Faux-epic-scale battles in cute puzzle games makes me grin like a fool. Plus, I absolutely dismantled the 2nd-to-last battle. It's among the best I've played, recently.
http://www.youtube.com/watch?v=Gkndo0I9Kms (at 5:40)
http://www.youtube.com/watch?v=D99eb7MHLHc
The Wizard Of Oz: Beyond The Yellow Brick Road: I really appreciate games like Earthbound 3 that set the tone from the select screen.
http://www.youtube.com/watch?v=MoCQkLcwTZ8
All of the "Autumn" section of the game relaxed me more than any game this year.
http://www.youtube.com/watch?v=K-5eKHt6K6U