Zero Grid vs Nockturn

A simple math puzzle that anyone can pick up and play. Easy to start, hard to put down. Use the number in the center to calculate each tile and turn all numbers into “0”. Start with simple puzzles using subtraction. As you progress, addition, multiplication, and division are introduced, making the puzzles deeper and more strategic. Drag across tiles to connect and select them in one stroke. Choosing the right steps and operations is the key to solving each puzzle. Clear stages from Level 1 to 200 in order. After clearing Level 40, the “Puzzle Generator” is unlocked, allowing you to create and play unlimited custom puzzles. Features • Simple and intuitive controls • Operations increase with difficulty (− → + → × → ÷) • Satisfying one-stroke drag gameplay • Strategic, brain-teasing puzzles • 200 challenging stages • Unlock the puzzle generator • Perfect for short play sessions Play now and experience the fun of puzzles!

Every arrow wants out. Tap one and it flies off the way it points — unless something is in the way. ONE RULE CHANGES EVERYTHING An arrow that passes a mirror FLIPS it. So whichever arrow you clear first rewrites the paths of the ones left behind. Not every open arrow is the right arrow. IT TEACHES, THEN IT TESTS The first time a new rule appears the game stops, explains it, and lets you try it in a level with no traps. Mirror, spinning arrow, rock, portal, chained arrow, iced arrow, counted arrow. 300 VERIFIED LEVELS From 7 arrows to 32, on boards from 5x5 to 8x8. Every level is proven solvable by a solver before it ships — and proven to require real thought. THE DAILY DUEL One board a day, identical for every player on earth. Solve it and share your grid: green for every clean move, red for every wasted one. BUILT TO RESPECT YOU - Works completely offline - No account, no sign-up - Never an ad in the middle of a puzzle - Colorblind mode, effects can be turned off - 12 languages