Game File (Linux): 

tunnelGame_January2017_lin.zip

Game File: 

tunnelGame_january2017_win.zip

'esc' to quit
'r' to restart
'wasd' to move
'space' to jump

I used Oculus Medium to sculpt the corridors and figure.
Meshlab was used to simplify the geometry and turn the vertex colors into a uv map.
The patterns are artifacts from exoerimentation with that process.
The tambourine is taken from Vet Trip's song "Finland"
I used Audacity to grab that.
I also may have used MeshMixer at some point for geometry simplification.
Really I was just trying to figure out a good process for putting these tunnels I make in Medium into Unity.