What's the Best RPG System for Underwater Adventures?

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I’m planning to run a hexcrawl adventure inspired by Subnautica and I’m on the hunt for a great RPG system that focuses on underwater play. Are there any suggestions for systems that fit this theme, or ones that could easily be modified to include mechanics for oxygen management, base building, and submarines?

Whats the Best RPG System for Underwater Adventures
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3 Answers

GamerNinja711 -

Thanks for the suggestions! I’m really leaning toward *Blue Planet*—I think it will mesh well with what I want to do!

SubmarineSkipper88 -

If you’re into something simpler, there’s a fun microgame called 24XX: The Deep. It’s got that underwater vibe, and could be a quick way to get things rolling for your campaign! You can find it on itch.io.

AquaDude42 -

You might want to check out *Blue Planet*. It’s designed with underwater settings in mind, so it could be perfect for what you’re looking for! Alternately, you might consider Classic Traveller—especially with its Undersea Environment supplement. I’m sure it can handle underwater adventures really well!

DeepSeaExplorer99 -

Yeah, I’ve heard great things about *Blue Planet*. Definitely seems like a strong choice!

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