About Tetradent: 24 Crystal Forge
Bring four crystals to the forge and discover a path to 24. In Tetradent, every number matters: choose two crystals, combine them with addition, subtraction, multiplication or division, and keep forging until one crystal remains. A friendly brass beetle smith brings this cozy 3D workshop to life.
Explore 144 puzzles across three difficulties at your own pace, build confidence with Apprentice hands, and tackle puzzles that reward clever grouping and fractions. Undo a move, reset a hand or ask for a hint whenever you want a fresh angle. Earn stars, unlock more challenges and return to your saved progress. There is no countdown—just the satisfying moment when your equation clicks.
How to Play Tetradent: 24 Crystal Forge
Goal: combine all four starting numbers into exactly 24. Each crystal must be used once.
Mouse or touch: select a first crystal, then a second crystal, then choose +, −, × or ÷. The chosen pair becomes one new crystal. Subtraction and division use the selected order: first number minus or divided by the second. Use Swap order to reverse the pair. Repeat until one crystal remains. Fractions and negative results are allowed.
Keyboard: use 1–4 to select the visible crystals, then +, −, * or / to combine them. U undoes the last move, R resets the hand, H requests a hint and Escape clears the selection.
Choose Apprentice (Easy), Artisan (Medium) or Master (Hard), with 48 levels in each difficulty. Use Undo or Reset to rethink a move, or Hint for a useful next step. Solve a level to continue and earn stars. Progress is saved on this device. Use the sound button to mute or unmute effects.