Swap 21

Swap, match, score 21!

Think fast, swap smart. Swap 21 is a card puzzle game where you swap adjacent cards on a 5×6 grid to form groups of three that add up to 21 — just like blackjack.

How to Play
Swap any two neighboring cards to line up three in a row or column that total 21. Face cards (J, Q, K) are worth 10, Aces count as 1 or 11, and number cards are face value. Match as many 21s as you can before time runs out!

Features
• 100 handcrafted levels with increasing challenge
• Race the clock — every second counts
• 3-star rating system based on matches made
• Wildcards to break through deadlocks
• Hints after moments of inactivity
• Penalty for bad swaps — think before you move!
• Game Center leaderboards for every level
• 8 achievements to unlock
• Clean, elegant card design
• No ads. No energy timers. Just puzzles.

Easy to learn, hard to master. Can you three-star them all?