Planet Zoo 2 · Research
Research
Species, disease, enrichment and education research: every topic, its levels and what each level unlocks.
217
topics
425
thriving req.
+30%
fertility
+75%
immunity
Research trees
Sample No. 01
Species Research
fertility · thriving · release groups
136
topics
levels 3 to 6
Each level reveals a thriving requirement, raises fertility by 15% and then 30%, adds the species fact sheet as an education topic or enables its release groups.
All 136 topics →
Sample No. 02
Disease Research
immunity · lethality
52
topics
levels 3
Each level raises the immunity of every species that can catch the disease, by 25%, 50% and then 75%, and lowers its lethality.
All 52 topics →
Sample No. 03
Enrichment Research
toys · feeders
22
topics
levels 1
Each topic unlocks a set of toys or feeders: 84 enrichment items in 22 topics.
All 22 topics →
Sample No. 04
Education Research
boards · speakers · stations
7
topics
levels 1
Each topic adds education topics or stations: 37 topics and 8 stations for education boards, conservation boards, speakers and interactive stations.
All 7 topics →
Field research in Wildlife Reserves
58 species open their later levels only after an Observation Network is set up in a Wildlife Reserve and the species is released there.