This was certainly interesting and atmospheric.
The way that you get sucked back when the train goes at high speeds reminds me of the subway scene in Highlander 2.
Changing the speed is kinda finicky with the first time I raised the speed it went instantly to warp speed while other times it seemed more realistic and incremental.
Touching the little orbs when going at high speed also seems to be hit and miss, as if the game was having a hard time keeping track of their hitboxes.