About
Spelunky Classic is a 2008 freeware platform game by Derek Yu in which a spelunker explores procedurally generated caves, collecting treasure and rescuing damsels while dodging traps and enemies; it was later remade for Xbox 360 in 2012. This is a web (PWA/WebAssembly) build of Spelunky Classic HD, created by targeting GX.games output in GameMaker and then modifying it, so it performs close to a native application. It's playable online and installable as a progressive web app; Electron builds were previously offered for macOS as well.
How it differs from the original
Unlike the original native Windows release, this version runs entirely in the browser via WebAssembly and is distributable as an installable PWA.
Getting started
Playable directly online as a progressive web app, or installed as a standalone app from the browser. Standalone Electron builds for Linux, Windows, and Android are no longer maintained, since they offer no benefit over the PWA version.