Galaga500

About

Galaga is Namco's classic arcade shoot-'em-up, credited in this project's credits simply as "the original game." Galaga500 transcodes the original Z80 arcade code to 68K assembly for the Commodore Amiga. It's fully playable with sound, with game bugs fixed and only minor graphical issues remaining, but performance is limited to 25 FPS on a plain A500 or A1200, reaching 50 FPS only on a fastmem-equipped Amiga.

How it differs from the original

The port reuses graphical assets extracted from the original arcade ROM rather than recreating them from scratch, following Z80 reverse-engineering work credited to a separate contributor.

Getting started

On Amiga (joystick required), press fire or the 5 key to insert a coin from the menu, up or 1 to start a one-player game, down or 1 to start a two-player game, and P to pause.

Known issues & limitations

• performance: On bare Amiga A500, runs at 25 fps; 50 fps on accelerated Amigas.
• gameplay: Missing 2P mode on Amiga version.
• graphics: Minor graphical and sound bugs present.

Media

Additional notes

Changelog

Version 1.1 added further performance optimizations.