Honestly? 4eD&D. Both XCOM EU/EW and XCOM2 combat feel very much like 4e combat. You could map many of the XCOM abilities directly to encounter or daily powers.
“Catacomb” (the short story) was incredibly prescient. It may not be the best written story, but it absolutely nailed the MUD (and later MMO) feel years before such things existed. I still have the torn out pages of that around here somewhere. Yeah, blasphemy I know. What can I say. In those...
These are the first five published in this new format. They intend to do another five which I assume will be numbered 6-10.
According to one of the Kickstarter updates,
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