Before revision: An approach for building mixed-initiative tools for the procedural generation of game levels  using interactive evolutionary optimisation is introduced. A tool is created based on this approach which (a) is focused on supporting the designer to explore the design space and (b) only requires the designer to interact with it by designing levels.
After revision: An approach for building mixed-initiative tools for the procedural generation of game levels using interactive evolutionary optimisation was designed for this study which (a) is focused on supporting the designer to explore the design space and (b) only requires the designer to interact with it by designing levels.