GemShell vs Electron, NW.js and Tauri for HTML5 Games ​

Short answer: GemShell is built on Electron. The difference is who does the work around it. With Electron, NW.js or Tauri you assemble the toolchain yourself — packaging, a native Steam module, a build per platform, SteamCMD. GemShell is that whole toolchain in one desktop app, with 137 Steamworks calls already wired to JavaScript. Choose it when you want to ship the game rather than build the pipeline; choose one of the others when you want to own every piece of it.

Building with Electron yourself ​

Electron runs your game in Chromium, which is exactly what GemShell uses too. On your own you would:

  • set up electron-builder or Electron Forge and a main-process script,
  • add a native Steam module and keep it compiled for each platform and each Electron version,
  • build and sign on each operating system, or set up CI to do it,
  • write the SteamCMD build scripts and depot configuration.

Good fit when you already know Node and Electron well and want complete control over the main process. (GemShell still lets you add your own main-process code.)

Building with NW.js yourself ​

NW.js is close to Electron in spirit: Chromium and Node in one runtime. The same tasks apply — packaging per platform, a native Steam module, SteamCMD — and fewer projects use it today than Electron.

Good fit when you already have an NW.js setup that works for you.

Tauri ​

Tauri makes much smaller downloads because it uses the operating system's own web view — WebView2 on Windows, WebKit on macOS, WebKitGTK on Linux — instead of shipping Chromium. The trade-off for games is that the three engines differ: a WebGL or audio behaviour that works in one can differ in another, and you test three browsers instead of one. Steamworks goes through Rust.

Good fit when download size matters most and you are comfortable in Rust.

GemShell ​

  • Open the folder with your index.html; nothing to set up or add to the game.
  • Windows, macOS and Linux built from one computer, plus iOS and Android projects.
  • The Steamworks API as a global steam object — 137 calls in 23 areas, including lobbies, P2P, the Workshop, Steam Input, the inventory, the timeline and voice. See the coverage list.
  • One-click deploy to Steam, itch.io and GitHub.
  • Assets sealed into one encrypted bundle.
  • Lite is free; Pro is a one-time $29.95.

Good fit when you made the game in Construct, GDevelop, RPG Maker, Phaser, Three.js or similar, and you want it on Steam and in the stores without becoming a build engineer first.