A browser game to learn prompt engineering by playing — explore a world and solve challenges by writing prompts. Techniques from OpenAI, Anthropic, Google & xAI, each cited.
Latest release v1.2.0 — Promptasy v1.2 — 濁靈之夜：遭遇、垂直世界、故事收尾 · 11 Sept 2026
2 files for Codex, OpenCode and Claude Code: promptasy AGENTS.md, promptasy CLAUDE.md — 9,575 tokens loaded in every session.
AGENTS.md A 1,936 tok CLAUDE.md A 7,639 tok These files are romanticamaj/promptasy's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.