Everything is a general purpose computer. Just look at how many things have been made to run doom. I haven't read the law specifically but if it actually does say this then that language is useless and means practically everything.
Laws are interpreted by people trained to fill in the blanks[1] with a best guess of the legislative body's intent. And the intent here seems pretty clear: to regulate computing devices that let end users easily install software from a centralized catalog.
[1] which we all do subconsciously in day-to-day speech, because all language is ultimately subjective
I guess Linux native games on GoG might be covered. All windows and wsl programs run in userspace compat layers. iOS might be covered. Snap, probably not (containers), AppImage? Maybe?
Nix, and brew? Probably not.
If people with power over you want to "selectively punish you" they don't need new laws.
And if you want perfectly proscriptive, defined laws in all situations with no "human interpretation" you're in the wrong universe, and may as well be shouting at clouds. The world, and especially human society and interactions, just doesn't follow strict definitions like that.
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.
Make it unambiguous that 100% of people are criminals, and all you have to do is control the prosecutor’s office.
This law seems to be in that category.
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.