Playerbase may be dead, but the dev is very much alive.
I admit there is not much to do in this game right now. That's why we're currently hard at work on a big update for this game which will include programmable game modes and the shop. It will take time.
Once that update is released, i will use a Steam Visibility Round/try to contact Steam to promote new update to players, and hopefully online will go up a bit. At that point the game should offer more things to do and a bigger incentive to play.