Working title:
"Trainageddon"
Basic idea is you are in charge of trains at a train station. This train station is like no other, it is very busy, and very poorly designed with cris-crossing tracks everywhere forcing passengers to cross over tracks in many places to get to their train. The player is in charge of clearing departing trains to leave and also clearing arriving trains to open their doors and let passengers out. Passengers will do their own thing and either find their train on their own, or disembark a train and try to either board another, or leave the station.
Your job is to try to get trains to run over as many passengers as possible, ideally getting large combos along the way. Because why not.
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Will post some more design plans when I sketch them out, probably over the weekend.