Galactic Chase by this company is what Galaxian should have been when Atari themselves produced this in cart form factor. The game is as good as it gets, and load entirely in one pass, into RAM. Play action is fast, predictable, authentic with just the right sound effects. An original copy of this game on disk sold the other day on eBay for $10.00. That's a bargain. The IBM ports of this game just don't have that same touch that it has played on a vintage Atari 8-bitter. If you find it for the 8-bit, buy it, and don't look back. You'll not regret your purchase. Now, go save the earth!