Divinity: Original Sin 2

[Mark-x]

 Outside of tabletop games, there are few RPGs that boast the liberating openness of Larian's humongous quest for godhood. If you think you should be able to do something, you probably can, even it it's kidnapping a merchant by using a teleportation spell and then setting fire to him with his own blood. Almost every skill has some alternative and surprising use, sometimes more than one, whether you're in our out of combat. 

You can enjoy this game of madcap experimentation and tactical combat with up to three friends, to boot, and that's where things start to get really interesting because you're not forced to work together or even stay in the same part of the world. Indeed, there are plenty of reasons to work against each other. The player is always in the driving seat, and with four players, collisions are inevitable. Just remember: if you freeze your friends and then start poisoning them, at least apologize after.