Recently I've been playing Torchlight II in Steam and GOG. Both versions still run perfectly without issues and I was able to play co-op online and offline with friends and family. The game still absolutely ROCKS with intense mini-bosses, randomly generated minions and huge boss fights. Your character will level up quickly so each time you play try a different class and level up a different skill. Its like playing the first time over again, but you are familiar with the levels and story, but even the levels change a bit.
Mint 19.3 64-bit
GeForce GTX 1060