Diablo IV's StarCraft crossover includes three free in-game shop gifts, released one per day from September 26 through September 28 at 12 p.m. PDT. The promotion also runs a separate Twitch Drops track with rewards for up to six hours of viewing.

The paid class bundles are not required for either set of free rewards. They sit in the same crossover, but they are separate purchases.

Three shop gifts unlock across three days

- September 26: My Life for Aiur! and the Arm of the Purifier mace cosmetic. - September 27: Marshal the Rebellion! and the Heat of Char two-handed polearm cosmetic. - September 28: Mutation Complete! and the Parasite Spitter two-handed crossbow cosmetic.

Blizzard says each gift remains claimable while the StarCraft crossover is active. The announcement does not give a separate closing time for these shop claims, so grabbing them as they appear is the cleanest option.

A Diablo IV character in Protoss-inspired armor fires lightning at enemies.
The crossover also brings Protoss-inspired armor into Diablo IV.Blizzard Entertainment

Twitch Drops require two, four and six hours

Eligible Diablo IV streams count toward the Twitch Drops campaign from September 26 through October 10. Two hours unlocks the Ancient of the Void Emblem, four hours unlocks The Teeming Brood Emblem, and six hours unlocks the Forward unto Dominion Emblem.

Connect the correct Battle.net and Twitch accounts before starting the timer. Watching on the wrong account for six hours is the sort of avoidable pain nobody needs.

The official StarCraft crossover announcement also lists paid armor sets for every Diablo IV class, plus a Zergling mount bundle and a companion bundle. Those cosmetics are optional purchases. The three dated shop gifts and the Twitch emblems are the free parts worth checking first.