Blizzard first original game in over 15 years will be released on May 24. That's when Overwatch, its team-based multiplayer shooter, will be launched on the Xbox One, PC and PlayStation 4 platforms.

Blizzard also announced that an open beta for Overwatch will begin on May 3 for people who pre-order the game, and those folks can invite a friend. The early access offer ends on April 29. Every Xbox One, PC and PlayStation 4 owners will be able to join the open beta on May 5, and it will end on May 9. All 21 Overwatch heroes and all of the maps will be available during the open beta.

Here's a quick description of Overwatch:

"In Overwatch, players join the ranks of a legendary force of soldiers, scientists, adventurers, and oddities, and clash on the battlefields of a near-future Earth. The game features a diverse cast of 21 heroes—each with their own unique arsenal of extraordinary weapons and incredible abilities. Teamwork is critical as players complete objectives, swap heroes on the fly, and combine their powers to game-changing effect—the action is intense, immediate, and fun."