If you remember the 80s, there’s a good chance you spent some quality time with Konami’s Castlevania for the NES. You probably also had a cool Sony Walkman and ate lots of spooky Ghostbusters cereal while watching He-Man cartoons on the TV in your brightly colored Jams, but that’s not the point of this article.

Thanks to modder and YouTube user, M0rtanius, you can play the classic 2D side scroller in glorious Half-Life 2 3D. Get a glimpse of the level in the video below and download the mod here if you’re interested.