Demon Gate — original feudal action browser game (NOT affiliated with any existing franchise).WHAT YOU GET (instant download ZIP)✓ Full HTML5 Canvas source — vanilla JavaScript, no framework lock-in✓ 30 playable stages with bosses, ranks, and soul/weapon progression✓ Procedural Web Audio — no royalty-bearing music files✓ Zero external image assets — deploy anywhere static files work✓ Commercial license for ONE project (see LICENSE.txt)✓ CUSTOMIZE.md — stages, enemies, controlsPERFECT FOR• Indie devs learning action combat systems• Agencies delivering a branded browser mini-game to clients• Portfolio / landing-page engagement hooks• Sellers who customize for clients (not redistribute raw source)TECHHTML + CSS + JS | Works on Vercel, Netlify, GitHub Pages | ~68KB ZIPLIVE DEMOhttps://ship-project-kappa.vercel.app/demon-gate/Full 30-stage browser demo (English UI; add ?lang=ja for Japanese).LICENSESingle commercial project. No redistribution of source as-is. Full terms in LICENSE.txt.Support: customization guide included. Custom development available — message seller.