I'm in! I can play two people if you want a larger roster. They'll need to be on the same team, though. I assume you're going to set up a map and locations (if scavenger hunt) and a way to play cards fairly (if card game). Just as long as it doesn't become "Battle Royale" or anything.

As for team names, perhaps it would be best if the students formed their own team name? That would get more people involved, since I would be less excited about joining a team with a cheesy pre-picked name (if it was cheesy). Maybe serve up a list of potential names and let students vote on their favorite?