the plumber

In this first-person game you will help Luke, a plumber who is trapped underground because of a weird accident, to find a manhole and escape from the labyrinth of the sewers. That won't be easy, granted: the level of disgusting liquid and unmentionable matter will keep increasing and you will need to find a way to adjust the valves in each pipe, to avoid flooding; in doing that, you will also need to fight against giant bats and angry mice which will lurk in every corner. Did I mention the air is often toxic there and you will need to find a gas mask to survive?