Pestilence

Pestilence is a game about a steampunk version of Britain in which a team of scientists experimented on rats in an attempt to develop a breed that is immune to producing and carrying the plague. However, in doing so, the rats managed to evolve and go rogue under the unity of a connection with one another.

You, one of the lab team members, must venture into the city to collect the scattered research notes in order to develop a method to stop their connection.