Well this is certainly one of the most unique games I've played in SBIG. The experience of the menu music playing in 4 instances was one of the most chaotic episodes I've encountered so far, but then the glorious moment when they all synchronized felt damn near magical.
I did terribly since I had to click on each window to move in each direction, but it wasn't as bad as I would have expected playing a 4-player game by myself. I died each time I tried but I found it entertaining. The explosion sound is fittingly intense, you go from zooming through a hexagonal tunnel with some voiceover to suddenly dying in a horrifying blaze.
I do agree with the suggestion to add some form of indication of who controls what direction though, to add some chaos to the mix just randomize who controls what direction on each respawn perhaps.
Nice work!