Starblo

Starblo (a.k.a. Project X) was an action-RPG conceptualized by Blizzard North after they completed work on Diablo II. While one team focused on continuing to develop for the Diablo series, the other was defined as the "we love Diablo but it's time to try something new" team. After throwing around various ideas, including a kung fu RPG and a superhero-themed game, the team settled on the idea of making a "Diablo clone," but as a space opera. The project thus earned the nickname "Starblo" due to its mix of a space setting and Diablo's ARPG formula.

Like Diablo II, Starblo would take place over several acts, but be spread across numerous worlds rather than be confined to a single one. Players would travel from world to world in a customizable spaceship, whereupon the gameplay would be based on killing and looting space monsters.

By 2003, a few playable builds of the game existed, but the team hadn't come up with a proper name. Development of the game ended this year.