Planet Zoo 2 locks a significant chunk of its Franchise mode content behind an Accreditation system that rewards players who build wide rather than deep. Starting with just 32 species and a single Bronze marketing slot, you'll need to grow a network of zoos and Wildlife Reserves to reach Tier 5 and access the full 136-species roster, including lions and elephants. The system sounds complex at first, but the path to max Accreditation is straightforward once you understand what actually drives progression.
What is Accreditation in Franchise mode?
Accreditation is the progression framework for Planet Zoo 2's Franchise mode. It determines which species are available in Animal Trading, how many marketing slots you have, what research equipment you can deploy, and how much animal storage you get. There are 5 tiers total, and you only need 3 stars (not the maximum) to meet each requirement, which makes the grind more manageable than it first appears.
The two pillars that feed into Accreditation are Zoo Reputation and Biodiversity Rating. Zoos generate Reputation Stars, while Wildlife Reserves generate Biodiversity Stars. You need both to reach the upper tiers.
Planet Zoo 2 Franchise Mode Accreditation Explained
What are all the Accreditation tier requirements and rewards?
Here's the full breakdown of every tier, what you need to reach it, and what you unlock:
| Tier | Requirements | Species Unlocked | Other Rewards |
|---|---|---|---|
| 1 | None (starting tier) | 32 species | Observation Platform, +1 Bronze Marketing Slot |
| 2 | 1 zoo with 3 Reputation Stars | +33 species | Camera Trap, +2 Bronze Marketing Slots |
| 3 | 2 zoos with 3 Reputation Stars, 1 Wildlife Reserve with 3 Biodiversity Stars | +31 species | Acoustic Monitor, +1 Bronze +1 Silver Marketing Slot |
| 4 | 2 zoos with 3 Reputation Stars, 2 Wildlife Reserves with 3 Biodiversity Stars | +30 species | +1 Bronze +1 Silver Marketing Slot, +50 Animal Storage |
| 5 | 2 zoos with 3 Reputation Stars, 3 Wildlife Reserves with 3 Biodiversity Stars | +10 species | +1 Silver +1 Gold Marketing Slot |
The maximum species count across all tiers is 136. Tier 4 is worth prioritizing early if your breeding program is scaling up, since the +50 Animal Storage comes at exactly the point you'll start feeling the squeeze.
How to reach Tier 5 Accreditation efficiently
The fastest path to max Accreditation follows a specific build order. Here's the sequence that minimizes wasted effort:
- Build and develop Zoo #1 to 3 Reputation Stars to unlock Tier 2.
- Open Zoo #2 using Conservation Credits and raise it to 3 Reputation Stars.
- Establish your first European Wildlife Reserve, clear Environmental Pollution and Invasive Flora, then build out Ecosystems.
- Release species into the reserve and set up a basic Research Network for 3 Biodiversity Stars, which unlocks Tier 3.
- Repeat the same European species approach for Reserve #2 to reach Tier 4.
- Complete Reserve #3 with the same European species suite to hit Tier 5.
The European Wildlife Reserves are the right choice here because there's significant species crossover between them. You can use the same pool of releasable animals across all three, which means less Animal Trading and less time hunting for rare species. Check the full Wildlife Reserves and releasable animals guide to see exactly which species work across multiple locations.
Planet Zoo 2 Franchise Mode Accreditation Explained
How do you raise Zoo Reputation Stars?
Zoo Reputation is built from four categories: Animal Husbandry, Sustainability, Guest Education, and Guest Experience. Each one needs consistent attention.
Animal Husbandry
This comes down to welfare and the Thriving state. Research species fully to unlock their Thriving requirements, then meet them through correct habitat size, terrain type, temperature range, food variety, and enrichment objects. Animals that are merely "okay" won't push you toward high Reputation Stars the way Thriving animals will.
Sustainability
Place renewable energy sources and recycling bins throughout your zoo. These are easy wins that many players overlook early on. A few solar panels and a handful of recycling bins across a mid-sized zoo can meaningfully move your Sustainability score.
Guest Education
Education boards placed near habitats and exhibits need to cover the available topics for that species. Hiring educators for animal talks also contributes here while simultaneously boosting donation income. For a deeper look at maximizing this specific metric, the Guest Education Rating guide covers every lever available.
Guest Experience
Guest happiness, scenery rating, and species variety all feed into this category. Marketing campaigns help here too, boosting animal appeal and pulling more visitors through the gates.
How do you raise Biodiversity Stars in Wildlife Reserves?
Biodiversity Rating runs on two sub-systems: Ecosystem Rating and Research Rating.
Ecosystem Rating
Create Ecosystems within the reserve and improve them from Established to Flourishing status. This means releasing the right species to fill Ecosystem Roles. Clearing Environmental Pollution and removing Invasive Flora before you start releasing animals keeps the process clean and prevents you from fighting against a degraded baseline.
Research Rating
Deploy a Research Network using the monitoring equipment unlocked through Accreditation itself: Observation Platforms (Tier 1), Camera Traps (Tier 2), and Acoustic Monitors (Tier 3). Cover wide areas of the reserve with this equipment to maximize your Research Rating. The more ground your network covers, the faster the rating climbs.
What's the relationship between Zoo Reputation and Accreditation?
Reputation and Accreditation are related but separate systems. Reputation Stars determine whether a zoo meets the threshold for Accreditation tier requirements. Accreditation tiers then unlock new content globally across your Franchise. Think of Reputation as the qualifying score and Accreditation as the reward structure built on top of it.
Both systems reward the same behaviors: good animal welfare, engaged guests, and active research. Building toward one naturally builds toward the other.
Reaching Tier 5 Accreditation takes time but never requires anything exotic. Two well-run zoos and three European Wildlife Reserves, all sitting at 3 stars, get you the full 136-species roster and the Gold Marketing Slot. For the complete list of unlockables and progression targets across the whole game, browse the Planet Zoo 2 strategy guides collection for everything from achievements to cash management.
