When work on Overwatch began, it was decided that the game had to take place in a new setting, and one would be inviting for players. The idea was deemed unfeasible, though the concept stuck with Jeff Kaplan, who began developing his own pitch. Geoff Goodman pitched the idea of doing 50 classes (as opposed to the original 6–9 idea), the difference being that each class would be hyper-specialized. The new IP would be named Crossworlds, set on a remote planet with numerous alien species that acted as the 'crossroads of the universe.' Like World of Warcraft, Crossworlds would be a class-based MMO. The first four weeks were pitching ideas for an MMO in one of the pre-existing Blizzard universes (it has been indicated that StarCraft was the setting chosen concept art for the project was taken from Chris Metzen's early work on StarCraft, and Team 4 found the StarCraft setting compelling enough to do something similar as World of Warcraft), the next two were on developing a new IP MMO.

The six weeks ended up being divided into one block of four weeks, the other a block of two weeks. The developers came up with three separate game ideas, with the idea being that each idea would have two weeks in discussion. The remaining staff were given six weeks to come up with a new direction for the project. After it was shut down, 80 were permanantly assigned to other projects at Blizzard, and 20 more were temporarily relocated to other teams for anywhere from six months to two years. Specifically, at the time of its cancelation, 140 people were working on Titan.

Team 4's confidence was shaken by the project's cancellation, and many members of the team were transferred, leaving only a core group to brainstorm what Blizzard's next game would be.

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