PrimeWall

PrimeWall is a 3D runner game where you read incoming number walls and try to survive as long as possible. The player automatically runs forward while moving left and right across three lanes. Look at the number on each wall, run through it if it is prime, and avoid it if it is composite. Passing through a prime wall restores your remaining time, and consecutive prime hits build your combo. Composite walls are dangerous. In NORMAL mode, hitting one reduces your remaining time. In HARDCORE mode, a single hit ends the run immediately. Do you play it safe and avoid the wall, or go for the prime to recover time? Your score is built from a chain of quick decisions. In standard play, you can choose from fixed difficulty levels 1 through 7. As the level rises, the number of digits, wall patterns, and the trickiness of composite numbers change. Start with NORMAL to learn the rhythm, then challenge HARDCORE where every mistake can end the run. In ENDLESS mode, the stage advances every 60 seconds, raising the difficulty up to stage 7. Keep finding primes, extend your time, and see how long you can survive. Key features: - Simple three-lane tap controls - NORMAL and HARDCORE modes - Fixed difficulty levels from 1 to 7 - ENDLESS mode with stages that advance every 60 seconds - Local best times and recent score history - Game Center world rankings - BGM, sound effects, volume, haptics, and movement arrow settings - In-app language setting for Japanese, English, and System - HOW TO PLAY guide with basic rules and prime-number judgment tips PrimeWall is not a slow calculation quiz. Read the number, make the call, and move. Switch between attacking prime walls and defending against composite walls as you try to beat your longest survival time. This app has no ads, no in-app purchases, and no subscriptions.