List your top 5 (or as many as you wish) single player and multi player experiences ever in the world of gaming.

Here are mine:

Single Player:

1. God of War 3

2. Uncharted 3

3. GTA V

4. Red Dead Redemption 

5. Halo 3

Multi Player:

1. GTA IV

2. Red Dead Redemption 

3. StarHawk

4. Uncharted 3/Gears of War 3

5. Halo CEA

Single Player:

1. GTA: Vice City

2. ICO

3. Uncharted 2

4. Pokemon: Leaf Green

5. Portal 2

Multi Player:

1. Call of Duty 4

2. Battlefield 3

3. GTA IV

4. Battlefield: Bad Company 2

5. LittleBigPlanet 2

Notice how the Single Player games lean towards to Action/Adventure genre whilst the Multi Player games lean towards the Shooter genre.

Single Player:

- Final Fantasy VIII

- Spyro: Year of the Dragon

- Pikmin

- Ratchet & Clank: A Crack in Time

- Super Mario Galaxy 2

Multiplayer:

- Mario Kart: Double Dash

- Timesplitters 2

- Starhawk (yes, really)

- Team Fortress 2

- LittleBigPlanet 2

Single Player:

Pokemon Red/Blue 

Metroid Prime

Legend of Zelda: Ocarina of Time/Master Quest 

Fallout 3

Metroid Fusion

Multiplayer:

Warcraft 3

Halo 3

Age of Mythology

Heroes of Newerth

Super Smash Brothers Melee

Left 4 Dead

is starhawk really that good?

Singleplayer:

LoZ: Wind Waker
Final Fantasy 9
Mass Effect (any of the 3, probably the 1st one)
Syphon Filter
Pokemon Yellow (could be any pokemon game though)

Nearly made it: Pikmin, Dead Space, Loz:OoT, Kid Icarus:Uprising, Luigi's Mansion

Multiplayer:

SSB Brawl (although could by any SSB)
MW2
Mario Kart Double Dash (although again could be any Mario Kart)
NBA Jam (SNES)
Tony Hawk 2

Single:
1.) Chrono Trigger
2.) Super Paper Mario
3.) Red Dead Redemption
4.) Uncharted 2
5.) Fire Emblem RD
Multi
1.) MAG
2.) SSBM
3.) SSBB
4.) MarioKart DS
5.)MarioKart Wii

im assuming you mean this gen? if so

single player

1- red dead redemption
2 - god of war 3
3 - uncharted 3
4 - killzone 2
5 - assassins creed 2

multiplayer

1- killzone 2
2 - CoD MW2
3- Uncharted 3
4- killzone 3
5- Uncharted 2

(yeah i really love killzones and uncharteds multiplayer)

Single Player

Half-Life 2
Super Meat Boy
Panzer Dragoon Saga
God of War II
Ikaruga

Multiplayer

Virtua Fighter 4: Evolution
TimeSplitters: Future Perfect
Metal Gear Solid: Peace Walker
ToeJam & Earl
Contra: Hard Corps

Single Player
1. Super Mario Galaxy
2. Skyrim
3. Zelda Ocarina of Time
4. Heavy Rain
5. Bioshock 2
6. Metroid Other M

Multiplayer
1. Super Smash Bros. Brawl by such a longshot
2. Super Mario Strikers Charged
3. Battlefield 3
4. Mario Kart DS
5. Mario Kart: Double Dash
6. Kirby Air Ride
7. Super Monkey Ball GC
8. New Super Mario Bros Wii