I built this because most RL environments are either interesting or accessible, rarely both. Engaging environments like MineRL or Dota 2 either demand massive compute or involve painful setup—dependency hell, rendering configs, CUDA mismatches, OOM errors. Agenlus runs entirely in your browser using WebGPU. No install, no setup required. We start with redesigned classic control problems—CartPole, MountainCar, and their variants—with more environments on the way. This is an early release. Would love feedback on what environments or features you'd find most useful.