21 or Bust
21 or Bust is a skill-based game inspired by Blackjack. Place cards into four columns to make sums of exactly 21 — clear a column to score. There's no dealer, and both players get the same 52-card deck, so skill decides the winner. (Card game · up to 3 minutes.)
4 topics
- Score more points than your opponent before the cards run out or you press End Game.
- Place the current card into any of the four columns; you can preview the next card. Moves can't be undone.
- +10 points for each card you place.
- Clearing a column at exactly 21 pays a jackpot: +100 for a 1-card clear, +200 for 2, +300 for 3, and so on (+100 per extra card).
- Busting a column over 21 costs 500 points (you still keep the +10 for placement). Your score can't fall below 0.
Two cards in the deck are Wild. A Wild automatically becomes the exact value needed to complete a column at 21 and trigger a jackpot.
Each game lasts up to 3 minutes — the timer starts after your first card. Press End Game at any time to lock in your score, a smart tactic when you're ahead.