Your Own Private Island

Your Own Private Island is a system for procedurally generating an island using paper, a pencil, and two dice. Use it to sketch up a setting for roleplaying games, fiction, or daydreams.

Each island features a mountain, some rivers, a lake, and one or more forests, located at least somewhat plausibly in relation to each other. Populated islands also get towns, villages, roads, and a remote tower.

Animals not included, but if you'd like to add some, I recommend Exquisite Biome.

This version of YOPI was written up at the Go Play NW 2025 Zine Zone. (The system itself is part of an upcoming project.)