I also have fond memories of ZZT; my first encounter with it was a shareware disc of "SuperZZT's Monster Zoo", which I gather was a somewhat less-popular sequel

I also have fond memories of ZZT; my first encounter with it was a shareware disc of "SuperZZT's Monster Zoo", which I gather was a somewhat less-popular sequel with a screen that was allowed to scroll rather than paging over. Some of the fan-made worlds were really impressive in how they managed to accomplish visual and gameplay effects.