>>16314305
Dwarf Fortress (sadly pozzed now, you can play older versions pretty much forever).
Early Minecraft (now a property of (((jewsoft))); the rendering engine was written by notch in 24 hours for example; pre purchase versions have mods, specially 1.7.10, and low budget versions [classic, survival test, indev, infdev alpha and early beta although he did temporarily hire a guy to do 3d things in infdev days, he was fired soon after, mojang was only stablished in ~2010] are great for nostalgia).
Nethack (apparently slowly beginning to be pozzed now since the devteam was seemingly replaced over the 10 year update pause and they are making changes that are different from the rest of the game and its detail).
Etc.