So, after Crackdown 2, my Gamefly list has nothing up until Mafia II, which is until late August, so I've decided to go into the back catalogy of games that I missed. Then, I suddenly drew a blank and can't remember any games that people said to check out, so I would like some ideas on here. I just added Dragon Age: Origins on my list as that's the last thing I could remember missing. 
 
Don't say really popular things like Red Dead Redemption, Mass Effect 2, Super Street Fighter IV as I've already played most of those. I'm looking for some hidden gem type stuff. 
 
Thanks in advance!

Lost Odyssey is pretty good.

Could you make a list of all the games you own? It will be easier to recomend you games that way.

Tropico 3

Kameo: Elements of Power

@lilman1101: 
Games I own: Dead Rising, Gears 1 and 2, RE5, DMC4, Skate 2, Mass Effect 1 and 2, MW2, BC2, Super Street Fighter 4 and regular, Fallout 3, GTA4, Saints Row 1 and 2, Crackdown, Left 4 Dead 1 and 2, CoD:WaW, Hitman Blood Money, Halo 3 and ODST, and Red Dead Redemption.
   

" Lost Odyssey is pretty good. "

Banjo Kazooie: Nuts and Bolts. Or maybe you can check out the Xbox Arcade games.

I tried Lost Odyssey, it was okay, but I'm not that into JRPGs. Same thing with Tropico 3, not a fan of that genre.

The first Condemned is a really good game.

"

@lilman1101: 
Games I own: Dead Rising, Gears 1 and 2, RE5, DMC4, Skate 2, Mass Effect 1 and 2, MW2, BC2, Super Street Fighter 4 and regular, Fallout 3, GTA4, Saints Row 1 and 2, Crackdown, Left 4 Dead 1 and 2, CoD:WaW, Hitman Blood Money, Halo 3 and ODST, and Red Dead Redemption.
   

"

Borderlands is awesome. Try it out

Super Street Fighter 4 is really good and so is Red Dead Redemption. I think Mass Effect is great too.

DeathSpank comes out this week.  
 
The Transformers game was surprisingly decent. 

Bayonetta

Fable 2 

I feel like Dark Messiah of Might and Magic was a pretty good game that a lot of people overlooked if you want to try that out.

BF: BC2, I going to get in a few days, just got to get the money because I'm buying a new monitor for my PC and 360.

mw4

Have I told you about my unnatural love for Mercenaries 2? You shouldn't play it, because no one else on the planet liked that game, other than me.

No Mass Effect... Hm... DOA Extreme Beach Volleyball?

" Kameo: Elements of Power "

" Banjo Kazooie: Nuts and Bolts. "

Well, I think I have found my choices for now. 
 
Darksiders 
Transformers: War for Cybertron 
Dark Messiah of Might and Magic: Elements 
 
If anyone has more games to recommend, please continue. I would still like to see some more.

Amped 3 and Dead Rising. Those two got me to get a 360 in the first place :P

I haven't seen anyone say Oblivion. have you tried that?

Banjo Kazooie: Nuts and Bolts is a really fun game. Collecting parts for your vehicles and building them is so damn addictive. 
 
SSF4 is a really great fighting game, so is Virtua Fighter 5 Online. 
 
Tales of Vesperia is one of the best JRPGs to come out in a long time, but since you're not into RPGs I'm not sure if you will like it. The battle system is a lot different than other RPGs though, it's more real time like Star Ocean. 
 
Ninja Blade is a quirky, cheese-filled take on the action genre. It has insanely over the top cinematics, crazy bosses, and a lot of pretty memorable moments simply because it's so out there. 
 
Bayonetta is a must play, especially on the 360. 
 
Metro 2033 is an AMAZING FPS, with some of the best graphics on the 360 and probably one of the most immersive FPS's I've ever played. 

@xyzygy: Played Bayonetta, Ninja Blade, Virtua Fighter 5, and I am not interested in the other games you listed, but thank you for remindering me of Metro 2033. I was going to rent that awhile back and never got the chance too.

 
@Retro:
Played that already. 
 

" Silent Hill: Homecoming.

" DeathSpank comes out this week. "

What about the Assassin's Creed games. I didn't see those on your list of played games. Also I would second Oblivion except for the fact that the game is massive and can suck hundreds of hours to finish everything so maybe not a good rental. Also Dead Space, the Army of Two games if you have a buddy to play with, the FEAR games, Red Faction, and the Darkness are all games I would recommend.

The Darkness! Do not miss out on that game!

Buddies, Beer, Left 4 Dead. 
 
You're sorted.

bionic commando, not rearmed, the disc one.  although if you dont have rearmed  i suggest that too.

Your games list says shooter...so I have to recommend something with guns...Bioshock comes to mind but it's not a "rare gem"...Dead Space is a real tight game....Call of Duty 4 if only for the singleplayer. As for a rare game try Singularity.
 
Non-shooters: Assassins creed (1 or 2) and Fable 2

How about Borderlands?

Orange Box has a lot of really cool games on it.  Try Fallout 3 too if  you haven't already.

Why don't you just list the games you've played in the OP so we don't have to guess...