Yes, yes, you’ve all probably seen this already as it’s linked from slashdot! This operating system was originally written on the C64, occupies 42k of RAM, and has an impressive array of features, including a web browser! I’m going to watch out for that User-Agent in my access logs.. hehe
Ah! Nostalgia! I’m listening to a remix of Zig Zag from RKO linked below. This featured on the very first issue of Zzap64 that I and my brother bought. Also check out Zybex linked from the first page above, it’s an excellent horizontal shoot-em-up that I spent hours on!