I'm only doing this gen because I'm cool like that:

Singleplayer:

1. Dark Souls
2. Valkyria Chronicles
3. Red Dead Redemption
4. Ratchet & Clank: A Crack in Time
5. Deus Ex: Human Revolution

Multiplayer:

1. Socom: US Navy Seals: Fireteam Bravo 2
2. Super Smash Bros Brawl
3. Left 4 Dead 2
4. Red Dead Redemption





Okay ill do all time as well.

Single Player

1. Hitman: Blood Money
2. Shadow of the Collosus
3. Metal Gear Solid 3
4. Dark Souls
5. Resident Evil 4

Multiplayer

1. Socom 2: US Navy Seals
2. Super Smash Bros Brawl
3. Left 4 Dead 2
4. Timesplitters: Future Perfect
5. Red Dead Redemption

I had enough trouble narrowing it down without putting these in actual order, so here is my unordered list

Single Player:

Majora's Mask, KOTOR, Final Fantasy 6, Earthbound, Maniac Mansion

Multi Player:

League of Legends, Mario Kart 64, World of Warcraft, Timesplitters 2, Team Fortress 2

It is a very good game. The multiplayer is unlike anything I've played before. The only thing I can compare it to is Battlefield 3, except you can build whatever buildings you want to help defend you team as well as help the offensive. It's very addicting

i played the beta and it was pretty good but i didnt update the beta and recieve the extra contenet they added later (i guess tanks?) because it was a 1 GB download so i just ignored it. the biggest grip though with the multiplayer is that it didnt seem to offer any unlocks and stuff like that, kinda feels im playing without a purpose if you know what i mean. also how is the single player? (i really dont expect a great story from it so i wont mind of it doest)

1. Final Fantasy X
2.Final Fantasy Dissida
3.Pro Evo 11
4. Final Fantasy 7
5. Fallout New Vegas
6. Final Fantasy Tactics Wotl
7. Valkyria Chronicles
8. Persona 4

multi
1. Uncharted 2
2. Warhawk

You get unlocks, but they're cosmetic unlocks (change the appearance of your character).   I kinda prefer it this way, because it means that as soon as you start playing, you're already on the same level as everyone else - it's your skill (and knowledge of the maps) that can set you apart.

I also vouch for Starhawk multiplayer being good.  The mix of RTS and TPS is unlike anything I've really ever played before.  There's strategy involved in nearly every decision you make.  It's a blast (and LBI are giving it good post-release support, too).

edit: Oh, and about the single player, I certainly enjoyed it.  But I'm sure you've already read - it's about a 5-6 hour tutorial that prepares you for the multiplayer.  It's certainly not one of the best I've played, but definitely not one of the worst either.

Timsplitters: Future Perfect isn't from this generation, as much as I would love it to be.  Frees up a nice spot for you to list something else, though!

yeah the RTS and TPS mix was really awesome, ill probably get this as soon as i have some extra cash, i dont see any good games coming out soon to so im most probably gonna get this

Ye I can second that. It's a truly amazing game. The single player is basically just a glorified tutorial, but the multiplayer is just class. Unlike anything I have ever played. The maps are huge and the ability to build whatever u want whenever u want is really fun. Piloting starhawks is amazing too :) it really is a unique game and highly addictive.

This generation-

Single player:
1. Uncharted 2
2. Uncharted 3
3. God of war 3
4. Assassins creed 2
5. Gran theft auto 4

Multiplayer:

1. Starhawk
2. Littlebigplanet 2
3. Resistance 2
4. Uncharted 3
5. Need for speed hot pursuit