MotionTap: iOS Multi-Touch Game in the App Store

MotionTap was a real iPhone game published in the App Store, using multi-touch not as a UI gesture but as the core mechanic. Players had to follow several moving suns with their fingers while speed, target count, and energy loss increased the difficulty.

The code shows a complete early mobile product: Objective-C, cocos2d, particle systems, touch collision logic, level progression, pause and restart flows, localized menus, online highscore integration, and later Game Center-adjacent infrastructure. The work also included App Store packaging, release, product communication, and a self-founded company around the game.

• Game Loop Engineering: Development of level progression, countdown, energy, score, power display, pause menu, game-over flows, and restart logic.
• Multi-Touch Mechanics: Precise tracking of multiple fingers against multiple moving suns, including collision states, active particles, and increasing difficulty.
• Native iOS Development: Objective-C implementation with cocos2d, sprites, ParticleSun effects, sound effects, resource management, and App Store-ready packaging.
• Highscore & Competition: Online highscore posting, name entry, error dialogs, local score persistence, and later Game Center-adjacent integration.
• Product Launch: App Store release, German, English, and Spanish UI, website/video communication, and company context for distribution.

• Mechanic First: The game was built around one physically understandable action: follow the suns, keep contact, lose energy, and raise the score.
• Iterative Balancing: Speed, levels, target count, energy loss, and feedback were tuned so the game stayed immediately understandable while rewarding practice.
• Mobile-First Interaction: Multi-touch, short sessions, direct visual feedback, and native performance were product requirements, not just technical details.
• Launch Ownership: Engineering, asset integration, localization, highscore flow, App Store delivery, and product communication were handled together.