Hot on the heels of Sunday’s announcement of the HTC Vive’s price Valve has released the SteamVR performance test to help people see if their set up is VR ready. Since then the good people over at SteamDB and ValveTime have been digging through it’s code, and they found some interesting things, Kotaku reports.

As stated above, the SteamVR performance test does just that but instead of running a program that checks the specs of your PC it drops players into a two minute demo from Valve’s Aperture Robot Repair VR demo. From there the program will do all the system checks and tell the user whether or not their PC can handle VR, and if not what they will need to replace. But for a two minute demo there is a lot of hidden content.

Using the current and previous versions of the VR test SteamDB and ValveTime found what could have been Valve’s testing grounds for SteamVR. Along with various assets and other bits of code which I’ll get into later, they also found several different unfinished demos for games like Half-Life, Portal and Left 4 Dead.

First up is a Portal demo which spawns the player in a room, there isn’t much there except Atlas in a looping death animation.

Next is a Left 4 Dead test map filled with a lot of missing or broken assets.

This next demo is meant to be a headcrab shooting gallery.

According to Kotaku, this one is a test version of a drawer a player could find in the Aperture Robot Repair demo.

All videos come courtesy of ValveTime.

Other than the maps and unfinished demos seen above there was a host of textures and other assets discovered. Brace yourselves because some of them reference Half-Life 3 and Left 4 Dead 3.

Most of the Half-Life 3 stuff comes in the form of code strings, but someone did find a model for a D0g  that Reddit was messing around with awhile ago.

There were a some textures found for a leaked Left 4 Dead 3 character called the “Retired Engineer”.

This doesn’t confirm that Valve is working on either of these games, from what SteamDB says these are most likely out dated, but it still shows that Valve is using the assets while testing out VR, so who knows.

This isn’t everything that was found so head over to ValveTime for all the details.