3. Risk (regional conquest game) with voting on what to attack next (lot) 23 5. Tetris in teams (lot) 40+ 1. Whodunit, puzzles shared between rooms (few) 2. Obstacle course, students can pick the level they want, hardest (solvable) level wins (fewer) 4. Team card game, human + software teams (few) 6. block-chain meme exchange (none) 7. block-chain kudos distribution (1) 8. robot fight (of some sort) (few) 9. tron light cycle (of some sort) (1)