Gothic Castle Platformer Builder

Build a gothic pixel-art browser platformer with a chain lash, committed jumps, tactical stairs, heart-powered weapons and a two-phase boss. Three stages, keyboard and touch controls, original synthesized audio and an offline HTML file. Customize the game title and keeper name. Requires Codex or a comparable coding agent; agent self-checks may include repairs. Preview shows an actual generated build. This is a build prompt, not a finished-game download.