Small trees.
Thoughtful decisions.

Sprigshift is an original garden priority puzzle powered by the unmodified Mistreevous behavior-tree browser library.

Source: nikkorn/mistreevous, MIT, by Nikolas Howard. Version 4.3.1, commit 026f1ffe062309decda6059bb15430a73fc89f67. Observed 145 GitHub stars on November 4, 2026. Repository pushed October 11, 2026; checked-out source commit August 7, 2026.

Each beat evaluates a real Mistreevous selector tree with condition-and-action sequences. The garden simulation, levels, interface and puzzle design are original. This is an independent project.

The garden environment and Sprig character were created with OpenAI GPT image generation and optimized as local WebP assets. No external assets or game services are needed.

Full MIT notices, including the bundled lotto-draw dependency

Metadata tags: github-source, game.