If you're into modern games with useful manuals check out EXA Punks and Shenzen I/O. They are both Zachtronics programming puzzle games. And you have to print the manuals yourself (or order them online), but they're every cool and done in character. For example, the EXA Punks manual is a pair of 'zines.
https://www.zachtronics.com/exapunks/