About
Delta is a 1987 horizontally scrolling shoot-em-up for the Commodore 64 by Stavros Fasoulas, with music by Rob Hubbard; it was published in the US as Delta Patrol by Electronic Arts and later ported to the ZX Spectrum as Delta Charge. Javascript Delta is a self-described 'small weekend homage' to the C64 shoot-em-up Delta, built entirely in client-side JavaScript and CSS and released under the MIT license. It's deliberately unfinished — the author's own TODO list includes power-ups, more enemy variety, and a title screen — and development has halted.
How it differs from the original
The game's graphics are borrowed placeholder art taken from the arcade game R-Type rather than Delta's own visuals, while its music reuses a real Rob Hubbard Commodore 64 composition from the High Voltage SID Collection rather than Delta's original soundtrack.
Getting started
The game runs entirely client-side once its files are served from any web server — no separate installation or build step is needed.