There are degrees of vagueness, but laws generally attempt to avoid being vague with many definitions and strict construction. If a law is sufficiently vague it may be invalidated, or it is at least required to be interpreted to the benefit of the defendant under lenity.

Frotz and Zork/Tristam Island and tons of Z3 machine games cna run on a pen, on a FPGA based display and even under a PostScript file where the interpreter was done in PostScript. Heck, with Subleq and EForth some Z3 interpreter can be coded to run the games on simple hardware made with high school/advanced trade electronics kits.