Game: X-Men Arcade
System(s): Xbox Live Arcade, PlayStation Network
Max Number of Players: 6
Description: The classic 1992 X-Men Arcade game from Konami, where the X-Men have to put a stop to Magneto's plans. Allows drop-in and drop-out of play at any time, as well as difficulty options, and the option to choose either the USA or Japan version of the game.
Game: Teenage Mutant Ninja Turtles: Turtles in Time Reshelled
System(s): Xbox Live Arcade, PlayStation Network
Max Number of Players: 4
Description: An HD flash remake of the 1991 arcade game. Krang steals the Statue of Liberty for some nonsense reason, and when the Turtles try to get it back, The Shredder sends them into a time warp. The Turtles fight their way through the prehistoric era, a pirate ship, a wild western train, and even go into the future.
Game: Earthworm Jim HD
System(s): Xbox Live Arcade, PlayStation Network
Max Number of Players: 4
Description: An HD port of the Genesis/Mega Drive version of Earthworm Jim. Jim was an ordinary Earthworm until an atomic powered suit fell on him, turning him into the space traveling hero. Jim goes on a quest to rescue Princess What's-Her-Name from Queen Slug-For-A-Butt. On the way, he runs into other various villains on their homeworlds, and also constantly encounters his rival, Psy-Crow, in between. Features exclusive multiplayer stages based off of the classic stages, designed for 2-4 players.
*Game: Perfect Dark
System(s): XBox Live Arcade
Max Number of Players: 8
Description: An HD port of the 2000 N64 game. As a secret agent for the Carrington Institute, Agent Joanna 'Perfect' Dark finds herself involved in the middle of a corrupt plan put together by rival corporation dataDyne and the NSA to gain control of a powerful weapon of extraterrestrial origin. Includes 2 player co-op campaign, up to 4 player co-op challenges, and up to 8 players in the multiplayer Combat Simulator. (Note: This game lagged badly the last time we played it online for the stream, though. Also, this is Steve's favorite game ever.)
And for whatever reason they haven't been posted here:
*Game: Mario Kart Wii
System(s): Wii
Max Number of Players: 12
Description: Does this really need a description?
It's Mario Kart on the Wii! Take your favorite (or least favorite) Mario characters and race on 16 Wii exclusive tracks and 16 classic tracks from previous Mario Kart games.
*Game: Left 4 Dead 2
System(s): Xbox 360, PC
Max Number of Players: 8
Description: You're right in the middle of a zombie apocalypse, and you need to rely on the help of complete strangers to survive the horde of infected individuals. No mall or amusement park is safe. Allows up to 4 player co-op, and also features a Vs. Mode for up to 8 players, with one team being the survivors, and the other team taking control of the special infected army.
(The games I've marked with a '*' are ones Tom has played on the stream before. X-Men and Turtles in Time have been mentioned as possibilities for later. Not sure about Earthworm Jim, though, I just mentioned it because I have it.)