Operation Rain

Connect numbers. Build equations. Operation Rain is the math puzzle game that makes mental math feel like an arcade.

Numbers are falling. How high can you go? Operation Rain is a fast-paced math puzzle game built for quick thinking and pattern recognition. Numbers and operators rain down from above — drag a path to connect them into valid equations that hit the target, score points, and keep going. There's no timer. No pressure. Just you, the numbers, and an endless challenge that grows with you. HOW TO PLAY Drag a path through falling numbers and operators to form equations that equal the target value. Hit the target, earn points, and see how high you can push your score as the rain keeps coming. GET BETTER AS YOU PLAY Operation Rain isn't just fun — it genuinely sharpens your mental math. The more you play, the faster you recognize patterns, spot solutions, and build equations on the fly. It's a workout for your brain that doesn't feel like one. YOUR GAME, YOUR PACE Adjust speed and complexity to match your skill level. Start relaxed and work your way up, or crank the difficulty and test your limits. Every session is yours to control. CLEAN. FOCUSED. DISTRACTION-FREE. No ads. No accounts. No nonsense. Operation Rain is pure gameplay — a minimal, touch-first interface designed to get out of your way and let you play. • Fluid drag-to-connect touch controls built for iPhone • Adjustable speed and complexity settings • Endless gameplay with no time limits • Fully playable offline — no Wi-Fi required • No ads, no sign-in, no data collection • Built with SwiftUI for a smooth, native experience Whether you have two minutes or two hours, Operation Rain is always ready. Pick it up, chase a new high score, and see how far your math skills can take you.