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Sci fi RPG systems
(lemmy.ca)
This community is for meaningful discussions of tabletop/pen & paper RPGs
Rules (wip):
The easiest Traveller version is definitely the one from Mongoose.
Also, you should check out Seth Skorkowsky’s overview videos:
https://youtube.com/playlist?list=PL25p5gPY6qKVUg6ys5N1oRlsBI7DTByyI