App Overview
PrimeWall is a 3D runner built around quick number judgment. Passing through a prime-number wall restores time, while hitting a composite-number wall triggers a mode-specific penalty. Your score is your survival time.
Basic Rules
- The player automatically runs forward while moving left and right across three lanes
- Passing through a prime wall restores time and continues your combo
- Hitting a composite wall causes a time penalty in NORMAL and instant game over in HARDCORE
- Passing through an empty lane safely avoids the wall
- When all three lanes have walls, at least one wall is always prime
Key Features
- NORMAL and HARDCORE modes
- Fixed difficulty levels from 1 to 7
- ENDLESS play that advances stages every 60 seconds
- Game Center world rankings and local rankings
- BGM, sound effects, volume, haptics, and movement arrow settings
- In-app language setting for System, Japanese, and English
- First-launch onboarding and HOW TO PLAY guide
Modes
NORMAL
Hitting a composite wall subtracts time based on the selected level and resets your combo.
HARDCORE
Hitting a composite wall ends the run immediately. This mode rewards careful judgment.
ENDLESS
The stage increases every 60 seconds up to stage 7. The longer you survive, the faster your judgment needs to be.
Rankings and Saved Data
- Standard best survival times are saved locally for each mode and level
- ENDLESS best survival times are saved locally for each mode
- Recent score history is saved locally on the device
- If you are signed in to Game Center, scores can be submitted to matching world leaderboards
Pricing
PrimeWall is planned for release as a paid app on the App Store. It has no in-app ads, no in-app purchases, and no subscriptions. The sales price follows the price displayed on the App Store.
Operating Environment
- iOS 17.0 or later
- iOS app
- Japanese and English support
- Game Center world rankings
Important Notes
- Game Center requires an Apple ID, network connection, and Game Center availability
- Leaderboard display and score submission may be unavailable depending on Apple's Game Center status
- Gameplay details, difficulty, leaderboard IDs, pricing, and supported devices may change before release