Jurassic World Evolution 2 Classes & Characters: Complete Guide

Q: What are the four game modes?

Campaign, Chaos Theory, Challenge Mode and Sandbox. Campaign runs across five US states after Fallen Kingdom, Chaos Theory replays film scenarios, Challenge Mode makes money the constraint, and Sandbox removes financial limits entirely.

Q: Where is the campaign set?

On the United States mainland rather than an island chain, across Arizona, Washington, Pennsylvania, Oregon and finally California, with the last mission set in Yosemite National Park. You work for the Department of Fish and Wildlife rather than running a theme park.

Q: What is new compared with the first Jurassic World Evolution?

Marine reptiles in lagoons and pterosaurs in aviaries are the biggest additions, along with a proper disease system, a redesigned terrain and vegetation model, and smarter pack behaviour. Maps are also considerably larger than in the 2018 game.

Q: How do I stop dinosaurs escaping?

Watch the comfort percentage rather than the fence. Animals break out when their territory, social or environmental needs drop below threshold, so fixing vegetation, enclosure size and herd numbers prevents more escapes than upgrading walls does.

Q: Is the Dominion Biosyn Expansion worth buying?

It is the largest of the eight paid packs and adds its own campaign in the Biosyn Sanctuary plus new species and biomes. If you finished the base campaign and want more directed content rather than sandbox time, it is the pack to start with.

Every Jurassic World Evolution 2 build and class explained. Strengths, weaknesses, best gear, and which to pick for your playstyle.

EarlyGuides Editorial Team

Researched and editorially reviewed. Updated August 12, 2026.

Frontier released Jurassic World Evolution 2 on 9 November 2021 and moved the series off a fictional island chain onto the mainland United States. The campaign puts you inside the Department of Fish and Wildlife after the events of Fallen Kingdom, working across five states while Jeff Goldblum returns as Ian Malcolm. Lagoons for marine reptiles and aviaries for pterosaurs are the two headline additions over the 2018 original, and the reworked terrain system means herbivores now need the right vegetation planted rather than a generic green patch. Eight major paid packs followed through to May 2024, including a Dominion campaign set in the Biosyn Sanctuary.

Choosing the right build shapes your entire experience. This guide breaks down every option: what they're good at, what they struggle with, and which one matches your playstyle. For optimized builds with full gear sets, see our builds guide.

Quick Comparison

Build	Tier	Playstyle	Best Equipment	Beginner Friendly?
Campaign	A	Balanced	Hatchery	Yes
Chaos Theory	A	Balanced	Ranger Post	Yes
Challenge Mode	A	Balanced	Ranger Team jeep	Yes
Sandbox	A	Balanced	Mobile Veterinary Unit	Yes
Dominion Biosyn Expansion	A	Balanced	Paleo-Medical Facility	Yes

New player? Start with Chaos Theory. See our beginner's guide for why.

Campaign

Campaign is a strong option in Jurassic World Evolution 2.

Attribute	Detail
Tier	A
Playstyle	Balanced approach
Best Equipment	Hatchery
Stat Priority	Balanced stats
Core Gear	Best available
Key Mechanic	Dinosaur comfort and territory needs

Strengths

Highest overall performance across all content types
Solid all-around choice
Pairs well with Hatchery

Weaknesses

Popular choice, competition for resources
Needs specific gear to reach full potential

Recommended Progression

Start in Arizona to learn Campaign-specific mechanics
Focus on Dinosaur comfort and territory needs. It's this build's primary system
Prioritize Hatchery as your first major upgrade
See our full Campaign build guide for the optimal gear progression

Chaos Theory

Chaos Theory is a strong option in Jurassic World Evolution 2.

Attribute	Detail
Tier	A
Playstyle	Balanced approach
Best Equipment	Ranger Post
Stat Priority	Balanced stats
Core Gear	Best available
Key Mechanic	Disease outbreaks and the Paleo-Medical Facility

Strengths

Most versatile, adapts to any situation
Solid all-around choice
Pairs well with Ranger Post

Weaknesses

Lower peak damage than S-tier options
Needs specific gear to reach full potential

Recommended Progression

Start in Arizona to learn Chaos Theory-specific mechanics
Focus on Disease outbreaks and the Paleo-Medical Facility. It's this build's primary system
Prioritize Ranger Post as your first major upgrade
See our full Chaos Theory build guide for the optimal gear progression

Challenge Mode

Challenge Mode is a strong option in Jurassic World Evolution 2.

Attribute	Detail
Tier	A
Playstyle	Balanced approach
Best Equipment	Ranger Team jeep
Stat Priority	Balanced stats
Core Gear	Best available
Key Mechanic	Ranger Teams and the Mobile Veterinary Unit

Strengths

Best survivability for learning hard content
Solid all-around choice
Pairs well with Ranger Team jeep

Weaknesses

Slower progression speed
Needs specific gear to reach full potential

Recommended Progression

Start in Arizona to learn Challenge Mode-specific mechanics
Focus on Ranger Teams and the Mobile Veterinary Unit. It's this build's primary system
Prioritize Ranger Team jeep as your first major upgrade
See our full Challenge Mode build guide for the optimal gear progression

Sandbox

Sandbox is a strong option in Jurassic World Evolution 2.

Attribute	Detail
Tier	A
Playstyle	Balanced approach
Best Equipment	Mobile Veterinary Unit
Stat Priority	Balanced stats
Core Gear	Best available
Key Mechanic	Aviaries and lagoons

Strengths

Excellent in group and cooperative content
Solid all-around choice
Pairs well with Mobile Veterinary Unit

Weaknesses

Less effective solo
Requires deep game knowledge to use effectively

Recommended Progression

Start in Arizona to learn Sandbox-specific mechanics
Focus on Aviaries and lagoons. It's this build's primary system
Prioritize Mobile Veterinary Unit as your first major upgrade
See our full Sandbox build guide for the optimal gear progression

Dominion Biosyn Expansion

Dominion Biosyn Expansion is a strong option in Jurassic World Evolution 2.

Attribute	Detail
Tier	A
Playstyle	Balanced approach
Best Equipment	Paleo-Medical Facility
Stat Priority	Balanced stats
Core Gear	Best available
Key Mechanic	Fossil expeditions and genome viability

Strengths

Highest skill ceiling with unique mechanics
Solid all-around choice
Pairs well with Paleo-Medical Facility

Weaknesses

Steep learning curve, punishing mistakes
Requires deep game knowledge to use effectively

Recommended Progression

Start in Arizona to learn Dominion Biosyn Expansion-specific mechanics
Focus on Fossil expeditions and genome viability. It's this build's primary system
Prioritize Paleo-Medical Facility as your first major upgrade
See our full Dominion Biosyn Expansion build guide for the optimal gear progression

Which Build Should You Pick?

For Beginners

Chaos Theory is the clear winner. It's forgiving, teaches core mechanics, and remains competitive into endgame. Follow our beginner's guide for the best first-session experience.

For Maximum Performance

Campaign is the top pick once you understand the game's mechanics. Pair it with Hatchery for the strongest overall setup.

For a Challenge

Dominion Biosyn Expansion offers the highest skill ceiling. It's punishing when misplayed but incredibly rewarding when mastered. Only recommended after you've completed the game with another build.

For Group Play

Sandbox shines in cooperative content with utility and team support capabilities.

More Jurassic World Evolution 2 Guides

Similar Games

If you enjoy Jurassic World Evolution 2, check out these related guides:

Stardew Valley Classes Guide: simulation game with similar mechanics
Satisfactory Classes Guide: simulation game with similar mechanics
The Sims 4 Classes Guide: simulation game with similar mechanics

More Game Guides

American Truck Simulator

Assetto Corsa

Assetto Corsa Competizione

BeamNG.drive