Bomberman DS and Bomberman 2
8 player Bomberman is a big hit at PAX for obvious reasons. You're rarely short of players thanks to the amount of people in the lounge(s).
Mario Kart DS
You cannot lose with this one. Unless you're exceptionally bad at it of course.
Worms Open Warfare and Worms Open Warfare 2
The scorched earth clone continues to reign supreme thanks it being rather well suited to the DS.
Call of Duty 4: Modern Warfare
Stop laughing! It's a good shooter, honestly it is. Oh please yourselves.
The original, not the overly complex and slow Galactrix nonsence.
New Super Mario Brothers
A sublime platformer that has multiplayer functionality as well. Highly recommended.
Oh for pity's sake! It's Tetris!
The World Ends with You
Bizarre Square Enix JRPG. Very popular at PAX '08.
Perfect for those multi-hour waits in line.
PAX without Pokemon? Are you mad??? There's usually a good deal of people dueling at any given time, and they do support 4 players.
Geometry Wars: Galaxies
Twin stick shooting without the sticks. Great multiplayer action that will be new to PAX 09!
The brutally difficult yet fun N+. Multiplayer is limited to 2 people.
Final Fantasy Remakes and new titles
For the long plane/train/car/donkey/skateboard/jet pack/segway rides to PAX,you can't go wrong with a Final Fantasy title. Probably.
Grand Theft Auto: Chinatown Wars
The spirit of GTA4 brought onto the DS. An excellent game for long queue's and travelling.
The fact that you are reading this blurb is troubling. IT'S FREAKING PEGGLE! *sigh*
Excellent and intentive puzzle game for DS. Great for long queues.
Final Fantasy Crystal Chronicles
Prequel to the GameCube original that supports multiplayer. Standard dungeon hack JRPG but with the kind of TLC only Squarenix can muster.
Ouendan 1 & 2/Elite Beat Agents
The crime busting male cheerleading troop have become extremely popular over the years. The original Ouendan has always been held up as the better game that the westernised Elite Beat Agents, due mainly to the Jpop sound-track. It does support multiplayer, which is said to be quite fun.
Mario vs. Donkey King: Minis March Again!
This is a DSi only title, which can be downloaded from the DSi Store. A puzzle game, it has Mario guiding clock work versions of himself across various platforms in a similar manner to Lemmings
, only they don't explode or have different jobs. It has a level editor in a similar vien to LittleBigPlanet. Great for quick 10 minute breaks.
Said to be one of the finest RPG's ever appeared on the DS earlier this year. I personally will be finishing it off on the plane journey across to the Atlantic. If you have a long trip to and from PAX, take this along with you!
Age of Empires: Mythologies
A sound port of the PC original. Highly recommended RTS game that builds from the original Age of Empires games. Features all the usual figures from Greek mythology.
Advance Wars: Dual Strike and Advance Wars: Days of Ruin
Turn based strategy that first began its life on the GBA. Highly engrossing and entertaining with a deceptively shallow learning curve. A fantastic multiplayer game to boot, A+++ to use eBay vernacular.