Ben Daglish and Anthony Lees squeezed an absurd amount of atmosphere out of the SID chip. The Last Ninja on C64 has loader music that's honestly better than most full game soundtracks. "Wastelands" hits with this driving bass pulse and layered arpeggios that make the hardware sound way bigger than three channels should allow.
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"Palace Gardens" shifts into something almost meditative, these shimmering high notes floating over a steady groove. The Amiga remixes on here beef everything up with better samples but the raw C64 versions still hit harder somehow.
That chip grit just adds something. If you care about chiptune history at all, this collection is where a lot of the magic started.