To clarify, if I was introducing someone to the Diablo series for the first time and told them they’d have to start on the first one. I wouldn’t want them playing the bare vanilla version. There is a Bezelbub mod out there that gives the game lots of QoL improvements, you’d be thinking you’re playing a build of Diablo 2 before its final version.
So, if I had to tell anyone what the best way to play that game would be, it is the Bezelbub mod. That was how I’ve beaten the first game anyways.
I’d like to add a further bit to this
Fallout Community Edition, a reverse-engineered open-source reimplementation of the original engine. There’s also a version for FO2. It specifically says Fallout Et Tu is unsupported, but there’s no real reason it shouldn’t work, so… best of both worlds!