“All In” is the title of the final mission in StarCraft II: Wings of Liberty.
The mission is the climactic assault on Char, where Jim Raynor and his allies attempt to use the Xel’Naga artifact against Sarah Kerrigan. Players must defend the artifact while facing a massive Zerg attack, making the mission a large-scale test of the campaign’s systems and upgrades.
The exact mission title is sometimes confused with “The Reckoning,” the final mission of Heart of the Swarm, or with “The Crucible,” a late mission in the Zerg campaign. Those missions belong to different StarCraft II campaigns.
“All In” also reflects the campaign’s narrative stakes: Raynor commits his remaining forces to a single operation intended to restore Kerrigan’s humanity. Its outcome leads directly into the story told by Heart of the Swarm.