I got my start with Holmes Basic/1eAD&D when DnD was entering kindergarten.
At the moment, I am running a sandbox using a heavily house ruled game based loosely on B/X and its latter day iterations along with GLOG magic. I call it “FrankenDnDiy.”
Away from the VTT, I have played in a many years long Dragon Age setting, using Hackmaster 5e ruleset and am now playing in a years long 3.5e E6 campaign in the Witcher setting.