Train Taxi
Train Taxi is a one-finger route puzzle: collect every waiting passenger and your train grows a carriage per pickup — which is the reward and the problem, since your own tail becomes the level's final obstacle.
It's Snake with a timetable, and the pickup order you choose decides whether the last corner is a triumph or a self-collision.
Tip: collect the centre passengers first and spiral outward — outside-in routes strand your tail across the exit. More one-touch cleverness at train games.