Reference Material

GURPS 4th ed Hard Maths Blog
hardmaths.blogspot.com
Various sci-fi and ultra-tech musings and materials

Gaming Ballistic Blog
https://gamingballistic.com/
Very hard-science, high-math rules analyses, and expansions

GURB – Generic Universal Roleplaying Blog
http://gurb3d6.blogspot.co.uk/
Ultra-tech musings and expansions

Pyramid 3-44
Fatigue and Action Point expansion
Cuts down on the 1-action every turn issues

Dungeon Fantasy 8
Treasure Tables

http://mailanka.blogspot.com/2017/05/insurgency-tactics.html

http://mailanka.blogspot.com/2017/05/insurgency-personnel-part-2-veteran.html

http://mailanka.blogspot.com/2017/05/organizations-of-alliance-rebel.html

http://mailanka.blogspot.com/2017/05/insurgency-personnel-part-1-amateur.html

http://5stonegames.blogspot.com/

Reference Material

Neon Nights and Metal Men AnachronisticJam