In Pandemic Express - Zombie Escape, a group of humans try to outrun a player-controlled swarm of infected. Everyone spawns in a train station until one is randomly infected and needs to turn fleeing survivors into zombies. Survivors try to escape by train.
Every move you make is being followed by a Colossal Policeman. Piss him off, flatter, disappoint and lie or even romance a Giant to escape in this kafkaesque immersive-sim.