Mixed-initiative systems highlights the collaboration between humans and computers infostering the generation of more interesting content in game design. In light of theever-increasing cost of game development, providing mixed-initiative tools can not onlysignificantly reduce the cost but also encourage more creativity amongst designers. Thisstudy focused on the improvement of mixed-initiative aspects for a previously developedtool called Evolutionary Dungeon Designer or Eddy for short. Eddy placed a focus onusing its genetic algorithms to produce content that adhere to game design patterns.Using the feedback from Eddy 2.0’s user study and studying other related works, newfeatures have been planned and implemented to improve the elements of mixed-initiativein Eddy for version 3.0. The results primarily feature a new and improved workflow aswell as enhancing a room’s context with the addition of a logical world grid. This in turnimproves the program’s intuitiveness and makes it possible for the designer to createmore complex designs of their preference while maintaining the general functionalities ofthe original Eddy.The study was evaluated with a small scale user study of five users at a gamedevelopment company with most of the feedback being positive in nature. From thefeedback more features have been planned for a future version of Eddy being version 4.0.