Tier 4
Accreditation tier 4
Tier 4 needs 2 zoo(s) at 3 Reputation Stars and 2 Wildlife Reserve(s) at 3 Biodiversity Stars. Reaching it adds 30 species to the market pool and grants +1 Bronze +1 Silver marketing slot, +50 animal storage.
Requirements for tier 4
| Requirement | Value |
|---|---|
| Zoos at 3 Reputation Stars | 2 |
| Wildlife Reserves at 3 Biodiversity Stars | 2 |
What tier 4 unlocks
- +30 species added to the market pool
- +1 Bronze +1 Silver marketing slot
- +50 animal storage
Neighbouring tiers
Tools for this tier
Guide
Accreditation planner
Your star counts to the bottleneck.
Read guideGuideAccreditation overview
All five tiers side by side.
Read guideGuideReserves and rewilding
How biodiversity stars are earned.
Read guideSource and version
Tier table cross-checked 2026-10-17 against community captures and Frontier's 14 October 2026 statement that the requirements are under investigation.
FAQ
FAQ
Common questions about this topic.
How many species does tier 4 unlock?
30 additional species enter the market pool at this tier.
Do I need tier 4 before the next one?
Tiers are sequential: each tier's requirement builds on the previous one, and the unlocks accumulate.