13th Age/4e Sci-fi ruleset

This is a rulest based on 13th Age Archmage engine which I've written to run a Nova Praxis campaign, but eventually became a project of its own.

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It has a lot of 13th Age in it and a fairly chunk of 4e as well (with few bits of 5e too). It's not fully compatible with any of those systems, but can be played with just the 13th Age SRD (which is available for free).

It's been in playtest within our group for a while now and I consider it as an ongoing, evolving project, so feedback, if any, is welcome.