Works great on a Cardboard / NotCulus rig via Steam VR and Riftcat.

Very easy to setup and run on a Cardboard rig. Solid VR experience.

Using TriDef 3D via Trinus, Half Life 2 is a completly different game in VR. Details you missed first time round jump right out at you. Amazing.

Portal (currently) needs a third party app (such as TriDef) to run in 3D via Trinus on your mobile. Works great, however.

Elite Dangerous works best with Steam VR via Riftcat. Really good demo of what NotCulus can do.