It's a great demo, my wife and kids loved it too. There is a 2 player mode as well.
There is Mervils: A VR adventure for a full (although still quite short) 3D platformer. It's not very polished and quite basic by the books, but still a lot of fun to play in VR. 3D platformers work very well in VR.
Did you try Thethered? It should have a free demo. It's RTS in VR. Very cute game and easy to get into. You simply look at who you want to command, then look at what they need to do and done.
Is that an adventure game or RPG?
What are some really good VR games for a 12 yr old kid (my nephew) that only speaks Spanish??
Mervils is 3D platformer with some light rpg elements.
Tethered is an RTS, you direct your minions to build and defend an island while collecting mana.
Eagle flight, you fly like an eagle by tilting your head with various objectives (race, aerial combat, collect runs)
Fantastic contraption, build little machines with the move controllers to move the ball into the goal area
Pinball FX2, simply Pinball machines in VR with added effects around you.
Dino Frontier, very polished yet short campaign, it's an rts with dinos. Little replay value, but cute.
Holo Ball, high intensity racquetball type game, my kids like it, I don't like having to catch them all the time before hitting the wall.
Job Simulator, my kids keep begging for this one, they're stuck with the demo. They like Dead hungry as well, fry cook for zombies, crazy game.
Battlezone, steer a virtual tank, shoot other tanks, simple but quite pretty in VR.
End Space, pretty much Eve Valkyrie for single player, decent space combat.
He might need some help figuring out the objectives in Dino Frontier, the rest is pretty straightforward. Keep pressing buttons until it works :)
Or just get the European version of Skyrim VR, that should have a Spanish language option. M ratings are just for fragile English kids!
If he likes racing games, DC VR is very accessible and has tons of content.