Considering that we're planning to play fifteen games in seven and a half hours, that's thirty minutes for each, which is why I didn't consider any co-op games because of the unlikelihood of finishing them within a half-hour. Therefore, no Contra/Super C/III, no Kirby: Super Star, no TMNT II/III/IV, no Final Fight/2/3, nothing like that. (And no Nightmare on Elm Street, even though I recall liking that game, even though the initials also spell out NES (or NoES), and even though a modified Power Glove was featured in one of the movies.

: ) The Mario Party games, well, the mini-games seem too short, and any game mode seems too long.
With that stipulation of no strictly co-op, I found that the selections for the NES and Super NES were actually very limited. There are tons of co-op games, but very few pick-up-and-play competitive games. Sports games bore me (if they're not arcadey) and I didn't want any of the Street Fighter wannabes.
Included with my eBay purchases, even though they're not officially on the list, are
Tetris & Dr. Mario (Super NES),
Killer Instinct (Super NES) and
Mortal Jombat Trilogy (N64). Me and/or my brother also already own
Killer Instinct Gold (N64) and
Pokémon Puzzle League (N64). I will likely have
NBA Jam (Wii) and
Wii Party (Wii) before then, as well. So those, and probably others I can't recall this second, are possible sub-ins. Dunno about
Just Dance 2 (Wii), though. It was actually considered since it'll be the newest game by the time of the party, but if no girls are present, then I don't think any of the guys will want to get up and move, about seven hours into a gaming marathon and being around midnight.

:
I remember liking TimeSplitters: Future Perfect, so 'll consider a TimeSplitters game for a future party (there will be more, since I spent too much as it is!), but I still want to give Geist a spin, at least once. Sure, getting it free from the purchase of my Wii is probably saying something, but I'd never played multiplayer with anyone other than my brother. I'd actually finished the single-player story on a rental when it first came out, but it was funny that I'd never played my own copy until a few days ago.