How to Play
• Swipe or use arrow keys to move all tiles.
• When tiles collide, 2 or 3 consecutive tiles may merge if their sum is a prime number and does not exceed the "Next" target.
• A 3-tile merge takes priority over a 2-tile merge when both are valid.
• If no valid merge exists for a group, the tiles slide without merging.
• Each merge adds the resulting prime to your score.
• The game ends when the board is full and no merge is possible.
• Goal: reach the highest prime possible.
Scoring & Next Target
• The Next value shown above the board is the highest prime you can currently merge into.
• It advances automatically when you create a prime that matches the current target.
• Score increases by the prime value on every successful merge.
• Your best score and best prime are saved between sessions.
• Tip: plan 3-tile merges — they jump the target faster and are worth more points.
Medals
• Bronze 🥉 — reach prime 47 or higher.
• Silver 🥈 — reach prime 73 or higher.
• Gold 🥇 — reach prime 97 or higher.
The medal badge is shown live above the board as you play.
Beyond 97, the game keeps generating new primes — see how far you can go!
About
Primes was developed by Guilherme Zeni. It is a variation of the original 2048 game by Gabriele Cirulli, using prime
numbers and a different merge logic.