First it’s not exactly 30 year old content. There seems to be an actual effort to make a new WoW game based on the things fans like about the older content. There is a lot that is still “classic” but they have added a decent amount of changes.

To answer your question though, IMO they are using the Beta for a few things:

1. An end of Q3 money grab with just enough delay to push the “release” into Q4
2. A hype machine for the actual release.
3. A test of their new server infrastructure. The game is now “realmless” so it is essentially a mega server only separated by your chosen play style ( PVE, PVP, RP, Hardcore). I’m not even sure if they are going to separate regions (NA/EU) or if they are trying to make it more or less a global server.

Snowrunner is a good one. It has the weird combination of being a nice peaceful slow paced game that occasionally drives me into a rage and makes me want to break things.

I am first and foremost a World of Warcraft addict. I don’t know if it is actually one of the best games of all time, but it’s my comfort blanket. So it takes the #1 spot.

2. Valheim
3. Grim Fandango
4. Myst
5. Skyrim

Super TuxCart gets an honorary mention.