Mixed-initiative systems highlights the collaboration between humans and computers in fostering the generation of more interesting content in game design. In light of the ever-increasing cost of game development, providing mixed-initiative tools can not only significantly reduce the cost but also encourage more creativity amongst designers. This study focused on the improvement of mixed-initiative aspects for a previously developed tool called Evolutionary Dungeon Designer or Eddy for short. Eddy placed a focus on using 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, new features have been planned and implemented to improve the elements of mixed-initiative in Eddy for version 3.0. The results primarily feature a new and improved workflow as well as enhancing a room’s context with the addition of a logical world grid. This in turn improves the program’s intuitiveness and makes it possible for the designer to create more complex designs of their preference while maintaining the general functionalities of the original Eddy. The study was evaluated with a small scale user study of five users at a game development company with most of the feedback being positive in nature. From the feedback more features have been planned for a future version of Eddy being version 4.0.