SpinGreen

SpinGreen is a casino game math prototyping tool that converts reel strips and paytable JSON specifications into instant, playable browser prototypes. It enables game studios, designers, and producers to test and feel the rhythm, volatility, and feature mechanics of slot games before commissioning art or writing client code.

Key features include zero client dependencies, instant read-only shareable URLs, real-time telemetry inspection with RTP and hit frequency tracking, and support for multiple grid configurations (5×3, 5×4 with lines or ways evaluation). The platform provides speed options (Normal, Turbo 5x, Instant) and customizable bet amounts to facilitate rapid iteration.

SpinGreen solves the communication bottleneck between math designers and game engine teams by providing immediate, tangible feedback on game feel—answering the critical question of whether gameplay mechanics are rewarding or tedious before significant development investment.