XP boost formula
These are used as boost multipliers.
25% EXP boost = 1.25
50% EXP boost = 1.5
25% + 50% EXP boost = 1.75
Dinosaur XP × Boost Multiplier = Boosted XP
Adding Relic and Fossil XP to this gives you the final XP.
Number of dinosaurs required for each tier
Combining dinosaurs requires 25 of the same kind to create one upgraded dinosaur.
In other words, you repeat 25 × 25... each time.
| 1 | Normal |
| 25 | Gold |
| 625 | Platinum |
| 15,625 | Diamond |
| 390,625 | Rainbow |
| 9,765,625 | Shadow |
XP Relics list
| Rarity | Effect |
| Small★ | 0.50 |
| Small★★ | 0.75 |
| Small★★★ | 1.00 |
| Medium★ | 1.00 |
| Medium★★ | 1.50 |
| Medium★★★ | 2.00 |
| Huge★ | 2.00 |
| Huge★★ | 2.50 |
| Huge★★★ | 3.00 |
Huge XP Relic chances list
The chance of getting one Huge XP Relic (2.5% per attempt)
| Attempts | Chance | Gems |
|---|---|---|
| 5 | 11.9% | 50k |
| 10 | 22.4% | 100k |
| 20 | 39.7% | 200k |
| 30 | 53.2% | 300k |
| 40 | 63.7% | 400k |
| 50 | 71.8% | 500k |
| 60 | 78.1% | 600k |
| 70 | 83.0% | 700k |
| 80 | 86.8% | 800k |
| 90 | 89.8% | 900k |
| 100 | 92.0% | 1000k |
| 110 | 93.8% | 1100k |
| 120 | 95.2% | 1200k |
| 130 | 96.3% | 1300k |
| 140 | 97.1% | 1400k |
| 150 | 97.8% | 1500k |
It takes 
about 300k gems to reach a 50% chance.
It takes about 900k gems to reach a 90% chance.