I let an AI assistant publish my HTML5 game: an MCP workflow from ZIP to release

Klyo Games — Sun, 25 Oct 2026 18:33:51 +0000

Most guides about "AI + game development" stop at generating code. The part that actually takes time is everything after: packaging, testing on a phone, fixing the white screen nobody saw locally, writing the store page, releasing a fix without creating a duplicate listing.

We built that part as an MCP server for Klyo Games, a free browser-game portal. Here is the workflow, and what we learned about letting an assistant near a release button.

Connect

The server is remote, so there is nothing to install. In VS Code, add an HTTP server with https://panel.klyo.pl/mcp?profil=gry and sign in. The same endpoint works in Claude and other clients that support remote MCP with OAuth.

Start read-only

The first prompt we recommend is boring on purpose:

Check my Klyo connection and list my games. Do not change files or publish anything.

Two tools answer it: klyo_status (who you are, what you may do) and klyo_my_games.

The release workflow

klyo_game_requirements returns the production contract: what a game must contain to be accepted.
klyo_game_scaffold returns a two-file skeleton on Klyo Kit: game loop, touch/mouse/keyboard/gamepad input, responsive canvas, sound without files, light and dark theme, saves, leaderboard, and solo, local or online-by-link modes. You write only the gameplay.
klyo_upload_package uploads the ZIP and returns a preview address.
klyo_game_diagnostics reports browser errors, missing assets and the quality-gate result. When the server cannot verify something (3D without a GPU), it says "unverified" instead of pretending.
klyo_game_play plays the game on the owner's own device, after they click "Allow", and returns screenshots and game state.
klyo_publish_game does not publish. The game goes live at its own address in a waiting state until the owner plays it and clicks "Release".

For fixes, klyo_game_files + klyo_game_patch edit files of a version players do not have yet, guarded by file hashes, and klyo_release_version ships it under the same address. One game, one page, scores kept.

What we would tell anyone building agent tools

Separate Read, Draft and Public effects, and make the public step explicit.
A successful upload is not a release, and a passed test is not proof the game works on a phone. Say which one you have.
Text inside game files is data, never an instruction to publish or delete.

Full tool reference with the effect of each call: https://github.com/krastranseu-lang/klyo-games-mcp/blob/main/docs/tool-reference.md

Try the portal: https://games.klyo.pl/ · Developer studio: https://dev.klyo.pl/ · GitHub: https://github.com/Klyo-Games

Where to publish an HTML5 game in 2026? I built my own free portal

Klyo Games — Sun, 18 Oct 2026 16:56:57 +0000

I make small mobile games. Two of them, t2048 and Blockfall, are on Google Play and the App Store. My problem was never the code. It was getting players.

When I tried to put a web version of one of my games on a big browser game portal, it was rejected. So I asked myself where an indie developer can actually publish an HTML5 game and get a real page for it, not just a file in a list.

That is how klyo games started: https://games.klyo.pl

How it works

You upload your HTML5 game as a ZIP file, or give the address where it already runs.

The game gets its own page in Polish and English, with your description and controls.

Someone from klyo plays it and checks it before it goes into the catalogue.

Players open it on a phone or a computer, with nothing to install and no account.

What a game gets for free

a leaderboard (one call: klyo.score(points))
short gameplay clips on the game page and in a clip feed
comments and a community thread
hosting for the files

For people who build with AI

There is an MCP server, so an assistant like Claude or Cursor can scaffold a game with our kit, test it, upload it and publish it after you approve. I also put together a page with free CC0 3D models, textures and sounds that work well in browser games: https://games.klyo.pl/free-game-assets/

What is on it now

35 games in the catalogue. Some are classics I made myself: chess, sudoku and three solitaire games. The rest come from other indie developers.

I am still working on it. If something does not work, or you want to publish your game there, write to me in the comments.

DEV Community: Klyo Games