If you like the purple islands, then you'll love my latest work - Cha'alt (link below).
https://www.drivethrurpg.com/product/284600/Chaalt
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This is a weird, science fantasy, gonzo campaign setting and wilderness hex-crawl for old school fantasy roleplaying games. The Islands of Purple-Haunted Putrescence is a guide for helping you run crazy... [click here for more]