EGO Tech
The EGO tech tree is your mayor research backbone. Spending blue EGO currency on tech packs unlocks couriers (Tier 3), resource zones, expansions tools, maintenance staff, and late-game quality-of-life upgrades. Tiers gate behind rank stars and prerequisite packs — buying out of order wastes EGO and blocks progression. Use this hub with tools/ego-planner to sequence purchases across Tiers 0–9.
How EGO tiers work
Each tier contains multiple packs with individual EGO costs. Buying enough packs or specific milestone packs advances you to the next tier. Higher tiers unlock stronger automation and biome tools.
Rank challenges (see ego-tech/rank-challenges) often block tier entry until your town hits star thresholds for population, revenue, or cleanliness.
Tier breakdown pages
Split your planning by early, mid, and late tree to avoid spoiler overload and focus on relevant unlocks for your current save.
- ego-tech/tier-0-3 — workers, storage, couriers
- ego-tech/tier-4-6 — zones, maintenance, desert prep
- ego-tech/tier-7-9 — endgame logistics and exports
- ego-tech/rank-challenges — star gates explained
Couriers at Tier 3
The Tier 3 courier pack is the community consensus must-buy. Until couriers run, you are the delivery truck. Plan EGO spending from Tier 0 toward this unlock without detouring into optional cosmetics.
Related guides
guides/how-to-increase-ego for farming blue currency. guides/how-to-automate for applying unlocks in your layout.