Milestones

Milestones are the primary method of progression in the game, allowing the engineer to unlock new buildings, recipes, equipment, and more. They can be completed at the HUB Terminal by inputting resources. Sets of milestones are grouped together into tiers, and all but tier 0 are locked to the engineer from the start of the game. Completing tier 0 unlocks tiers 1 and 2, and completing phases of the Space Elevator unlocks tiers after that.

Tier 0
Tier 0 focuses on upgrading the HUB. Unlike milestones in later tiers, these must be completed in sequential order. Each milestone upgrades the HUB's appearance as well.

Tier 1
Requires completing tier 0 to unlock.

Tier 2
Requires completing tier 0 to unlock.

Tier 3
Requires completing Space Elevator Phase 1 to unlock.

Tier 4
Requires completing Space Elevator Phase 1 to unlock.

Tier 5
Requires completing Space Elevator Phase 2 to unlock.

Tier 6
Requires completing Space Elevator Phase 2 to unlock.

Currently unavailable in the alpha.

Tier 7
Requires completing Space Elevator Phase 3 to unlock.

Currently unavailable in early access.

Tier 8
Requires completing Space Elevator Phase 3 to unlock.

Currently unavailable in early access.