Monster Lab allows the player to make their own monsters and send them out to fight. In this tactical role-playing game, the player takes on the role of a young mad scientist to help save Uncanny Valley from the evil Baron Mharti.
The player must learn and perfect each of the three branches of Mad Science: Mechanical, Biological, and Alchemical by collecting parts and performing experiments in the castle under the tutelage of the three mad science masters. The player can level up with each successful creation and each victory in battle. The player takes control of created monsters to explore the spooky world of Uncanny Valley's six regions.
The quality and type of parts the player uses to create monsters will determine its strengths and weaknesses, as well as its potential for success in battles against Baron Mharti and other enemies. By combining different elements, the player can create a unique set of monsters that suit their playstyle.