danijar/crafter

A 2D procedurally-generated survival environment with 22 semantic achievements (foraging, crafting, combat, shelter) evaluated across both reward-based and unsupervised agents. Follows the OpenAI Gym interface with 64×64 RGB observations and 17 discrete actions, enabling comprehensive agent benchmarking within a single environment rather than across separate tasks. Evaluation uses geometric mean scoring of achievement success rates over a 1M-step budget, accommodating RL agents, exploration methods, and external knowledge approaches.

527 stars and 2,503 monthly downloads. No commits in the last 6 months. Available on PyPI.