How many of you really get a lot of use out of the DS's multi player features?
Growing up, I never really got to make much use of the GameBoy's multi-player, as finding someone with a GameBoy, the same game, having the equipment with me (and a link cable!) was always a chore - even more so since I lived in the boonies and the nearest living person was about 12 miles down the road.
But with the DS - man, I *love* multi-player on the DS. I have actually bought games because they allow single-card download play - and I've skipped others that don't. Hell, in one case, I bought two copies of the same game so I could play (it didn't support single-card, of course).
What brought this on is that I picked up the second Bomberman Land Touch! for the DS and received it in the mail today ($15.99 on Buy.com!). I'm amazed at how much better the multi-player is than on the first one. However, like the first one, the single-player mini-game mode... well, blows. I'll likely never really mess with it.
Now, skip over to New Super Mario Bros. It's a great game - but I've spent way more time playing multi-player than single player. I would honestly go out at midnight and pay $35 for an all-out multi-player only Mario vs. Luigi game with more levels, stats, WiFi, etc. Hell, I'd probably pay full price for just more levels.
Of course, there's Tetris, Mario Kart, Clubhouse Games, Uno and some others (what I am I forgetting here?) - what games do you think have significant value for multi-player action. Preferably local (WiFi is nice, but it's so much more fun to be in the same room so you can hit your opponent when he steals your stars) and single-card is a plus.