AI BriefingBuilding Spookseek AR with Replit: How a Designer Shipped an AR Ghost-Hunting Game in a Week
Key point
A non-technical designer used Replit Agent to build and ship an AR ghost-hunting game with complex 3D systems in just one week.
Details
Graphic designer Ruth Heasman transformed from a non-technical background into a skilled builder through Replit Agent. With Replit Agent's help, she built over 20 apps in about a year, earning a spot among the top 0.1% of Replit builders as a Master Builder.
Spookseek AR, which she created for Replit's mobile Buildathon, is a Halloween-themed augmented reality (AR) ghost-hunting game. Rather than relying on visual effects alone, the game actively leverages mobile hardware features including:
- Spatial scanning via camera, accelerometer, and gyroscope
- Haptic feedback and sound effects
- An immersive experience of tracking ghosts while navigating real physical space
During development, she ran into the technical limitation that Expo doesn't support ARKit. Rather than giving up, Heasman worked with Replit Agent to design her own custom 3D system. Building on Three.js, she projected a virtual sphere around the player to create the effect of floating ghosts, and optimized the aiming system through sophisticated camera math calculations.
Her success illustrates a model of the "complete builder" that goes beyond simple prototyping, aiming for a real App Store launch by way of TestFlight. It demonstrates that AI agents are powerful tools that lower technical barriers, enabling anyone to turn creative ideas into actual products.
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