Ichthyosaurus: Ocean Dino Sim

Contains adsIn-app purchases
4.1
487 reviews
100K+
Downloads
Content rating
Everyone 10+
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About this game

🌊 ICHTHYOSAURUS SIMULATOR - Underwater Dinosaur Adventure

Become the legendary Ichthyosaurus - the fastest marine reptile of the Jurassic seas! Dive into an incredible underwater dinosaur simulator and explore the mysterious ancient ocean.

🦕 ULTIMATE OCEAN DINOSAUR EXPERIENCE
Play as the Ichthyosaurus, a powerful aquatic dinosaur that ruled the prehistoric seas. This is the most realistic underwater dinosaur game on mobile!

🌊 EXPLORE THE ANCIENT OCEAN
★ Swim through stunning underwater environments
★ Hunt fish and sea creatures for survival
★ Battle dangerous ocean predators
★ Build your Ichthyosaurus family
★ Level up and unlock new abilities

🦈 ENCOUNTER LEGENDARY SEA MONSTERS
Face epic underwater dinosaurs and prehistoric sea creatures:
• Mosasaurus - The fearsome ocean predator
• Plesiosaurus - Long-necked sea reptile
• Helicoprion - Ancient shark with spiral teeth
• Sarcosuchus - Giant prehistoric crocodile
• Leedsichthys - Massive filter-feeding fish
• Cameroceras - Giant ancient squid
• Archelon - Prehistoric sea turtle
• Ammonite, Anomalocaris, and more!

🌅 REALISTIC OCEAN WORLD
- Dynamic day-night cycle with beautiful lighting
- Multiple weather systems: Clear, Stormy, Foggy
- Realistic underwater physics and movement
- Stunning 3D ocean environments
- Immersive sound design

⭐ KEY FEATURES
✓ Open world ocean exploration
✓ RPG-style progression system
✓ Customize your Ichthyosaurus appearance
✓ Quest system with exciting missions
✓ Family system - raise baby Ichthyosaurus
✓ Multiple skill upgrades
✓ Free to play dinosaur simulator

🎮 PERFECT FOR FANS OF:
- Ocean dinosaur games
- Underwater simulator games
- Sea monster games
- Marine reptile adventures
- Jurassic world games
- Aquatic dinosaur simulators

From Jurassic Dinos - creators of T-Rex Simulator with millions of downloads! Experience our best underwater dinosaur game yet.

Download now and rule the prehistoric ocean as the mighty Ichthyosaurus!
Updated on
Jan 23, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity, and Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.3
391 reviews
Ardillos, Nino Vincent C.
March 17, 2022
I got bored playing this game but it still very fun tho the only problem is the dinosaurs won't attack each other so that's why i let them fight each other and the land dinosaurs, the herbivore and carnivore won't attack it only attacks the same creature like their fighting for dominance maybe you should let the dinosaurs add like hunger system and thirst system that would be cool so the dinosaurs can drink and eat and I hope that we'll be added in the future thats all
37 people found this review helpful
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Abhimanyu Winatha
January 26, 2022
You need to add this : change size, Its a thing were you can change your animal size whatever you want. Big or small Went your size is big. it increases your health,armor,attack damage,and speed. Went your size is small. It decreases your health,armor,attack damage, but increases your speed even faster. Please add this.
12 people found this review helpful
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Spade The Artist
October 13, 2022
Would love to actually play it but it keeps crashing before I can even play as well as glitches badly in the skin editor. Will give it another shot when updated!
21 people found this review helpful
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