There are several ways to change the post war world: technology not progressing as fast as in OTL or it can be far in excess of the actual 1950s ala some of the factors seen in Classic: Atomic Horror.
Weird War II-19
Advertisement
GURPS Wiki
"The material presented here is a community original creation, intended for use with the GURPS system from Steve Jackson Games. This material is not official and is not endorsed by Steve Jackson Games."
READ MORE
There are several ways to change the post war world: technology not progressing as fast as in OTL or it can be far in excess of the actual 1950s ala some of the factors seen in Classic: Atomic Horror.
Weird War II-19