Since State of Decay, I've been paying more attention to Arcade games on XBL.

I've had more fun playing them than most full retail priced that don't pack much fun.

I downloaded Small Arms, State of Decay, Splosion Man, Iron Brigade, Mark of the Ninja, etc...

All high quality games that go under the radar of most gamers and all(?) of them were churned at MS Studios. Props to them.

There are much more games out there that suit my taste and probably yours, that is buried and waiting to be discovered by us.

Please let us know what games you played on XBL that is worth our time to play!!

I came to say Mark of the Ninja. That game was amazing. I'll have to check my collection. Deadlight was pretty great despite mediocre reviews, though. Try the demo.

I actually missed all of the Summer of Arcade titles this year. Need to rectify that.....

Maybe I need to check Deadlight up. Summer of Arcades wasn't enticing to me with the exception of Tales of Two Brothers.

I personally own over 100 XBLA titles and I definitely know what you mean. There are days where I can just play one of those smaller titles and have the time of my life. With the arrival of much more powerful hardware, I hope we don't overlook the little guys. They've brought me so much joy.

trials evolution is a great game that you might wanna try. its addicting as hell

I don't know what you've played, but Shadow Complex is one of the best games ever created.

I like the telltale the walking dead... American nightmare Alan wake... I liked peggle, clash of heroes, splatters, magic the gathering, hydrophobia, trial, and a bunch of other...

I played Trials and Hydrophobia had a really low user rating that's why I didn't check it out. But in the future I will.
I got Alan Wake but not AN.
Shadow Complex was ok to me. It didn't pull me in but maybe I should give it another chance.

What has been keeping me busy lately on 360 is Iron Brigade. It is super fun, I never thought tower defense would be this much fun.

Ms Splosion Man
Castlevania Harmony of Despair
Comic Jumper
Bastion
Battleblock Theater

I'm sure I'm forgetting a bunch of games, but there are the first ones that came to mind.

There are tons. Let me add one I haven't seen anyone else say, Catan. It's a fun as hell strategic board game with online MP. Idk what the community is like now but if you like strategy games it's awesome. It's not the same game as the shitty PSN one.