I’m surprised to see a QBasic game with 1GHz CPU and 512MB RAM required! Is that because the game needs it, or because that’s what it takes to even run a modern OS with dosbox or something?
It's because it's not written in QBasic. It's written in a variant of QBasic called QB64 [1] - a spiritual successor to Microsoft's QBasic intended to run on modern 64-bit machines.
I went over the BAS source the last time this was posted a few weeks back and it has a lot of keywords that are specific to QB64 so unfortunately you can't run this on a true DOS machine (or DosBox).
The first time it barfed was because there was a space in the filename, and the QB64 editor didn't handle it. Running on the command line, with quotes around the name, was flawless.
I did give it a try, but no luck; qb64 seems to only run the code by compiling it via C++, and that failed on my system. (And I don't have the determination to try to find out why.)
The latter I assume. The game does load the text file into memory, so the old 640kb machines would probably struggle, but otherwise, it looks like it should run well enough on a 386 (or even a 286, where I wrote my first QBasic scripts, though they were nowhere nearly as polished)
