More crazy Grand Theft Auto V mods, important lessons about virtual reality from Valve, and a trailer for this little game you might have heard of are just some of this week's best videos.

Valve writer Chet Faliszek's talk about the only virtual reality rule that matters: we don't know anything.

I'm sure Half Life 3 will get announced any day now, but until then, here's Gordon Freeman in GTA V, gravity gun and all.

8-Bit Bastard, the group who directed the video that announced the Rockstar Editor, are back with a music video for Gunship.

You've seen the Fallout 4 trailer, probably multiple times. But there's now denying this is the biggest video to drop this week, and it's worth watching again.

Koji Igarashi, the Castlevania developer currently raising money for Bloodstained, shows us how to slay a vampire.

Recent GTA V mods make it look more and more like the later, crazier Saints Row games.