The dinosaurs evolve against whatever you over-build. Defend 30 outposts with eight defenses: seven buildable tower types and your HQ. Pilot a mech, then adapt as each wave pushes back. Single-player tower defense with Breach and Containment challenges.

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Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“The game is playable from start to finish today. I am one developer, and I want feedback from players on balance, difficulty and new content before I call the game finished. Early Access lets me make those changes together with the people who play it.”

Approximately how long will this game be in Early Access?

“About 6 months. The final length depends on what players report and ask for.”

How is the full version planned to differ from the Early Access version?

“I plan to add more levels, more enemy types and more languages, and to support Steam Deck fully. I also plan to tune balance and difficulty based on player feedback. These plans can change as the game develops.”

What is the current state of the Early Access version?

“The full campaign is playable: 30 outposts across 6 biomes, 8 defenses (7 buildable tower types plus the HQ), 4 mechs, 4 difficulty tiers, and Endless mode. The game supports English and German. Saves sync through Steam Cloud. Expect balance changes and some bugs.”

Will the game be priced differently during and after Early Access?

“Yes. I plan to raise the price when the game leaves Early Access and version 1.0 ships.”

How are you planning on involving the Community in your development process?

“I read every bug report and suggestion in the Steam discussions and welcome player feedback. It decides which balance changes and new content come first.”
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This game is not yet available on Steam

Planned Release Date: Q1 2027

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About This Game

A tower defense game where the dinosaurs evolve. The more you fight them, the harder they hit back, adapting against what you throw at them to keep you on your toes. Spread your damage sources, find combos, or watch how the horde over-runs and kills all your hopes of containment.

The research experiment failed, the lab's breeding tanks kept going even as the humans left, the dinosaurs escaped into the wild. Out of the lab, the dinosaurs started merging with the machinery, kept breeding outside of their tanks at an alarming rate.

The only hope left is the Mesozoic Protocol.

An emergency protocol, designed to keep the breach in check and contained until the scientists can figure out a way to undo what they have done. You are in charge of it.

Build seven tower types: Pulse, Chain, Cryo, Mortar, Flame, Hive, and Barracks. Your armed HQ is an eighth defense. Dinosaurs resist some damage types. From outpost 12, they evolve against the towers you use most. Mix your defenses to keep them contained.

Mesozoic Protocol has 30 hand-designed outposts, meandering through different biomes, everywhere you are trying to stop the dinosaur herd from running over the rest of humanity, while the scientists are frantically trying to undo the mistakes of their research and what they have wrought onto the world. You are just buying time for them in a containment fight against something the world hasn't yet seen and is not really prepared to fight. Will you keep humanity from perishing?

4 difficulty tiers from Easy (is this a tutorial or what?) to Extinction (you will think the game is unfair, and wonder why you chose this suffering).

There are additional Breach and Containment Modifiers per level, so you can replay your favorite levels with an extra challenge. Breach bans some of your favorite towers and rewrites the wave list: more dinosaurs, and heavier ones, sooner.

Containment leaves you with only one life, locked loadout, no selling of towers. Lock in your strategy and survive the onslaught of dinosaurs in one final test of your skills. Up to 5 stars per level, all earnable.

You think you can beat the game on Extinction difficulty in Containment mode? Think again!

There's also an Endless mode that escalates forever so that you can keep honing your strategy until eventually the dinosaurs become too strong and overwhelm you regardless of your efforts.

There are also different boss waves, that will push you and your strategy to the limit. Some bosses on Extinction feel barely survivable. They are. Winning anyway is the point.

One mech pilot is available from the start. Collect bolts to add three more pilots to your roster. Each has four abilities, and you can improve their skills as they gain experience. Different mechs fit different strategies. They complement your tower setup and become part of the bigger plan.

A persistent meta tree helps you improve your towers as you progress. Spend stars from completed levels on tower and HQ upgrades. Reassign those upgrades as your strategy changes.

There are easter eggs scattered across the outposts. Look around and see if you can find them all.

Developed solo. Built because I wanted to play a tower defense game where the enemy actually pushes back and adapts to what you do.

Trailer music: "Black Vortex" by Kevin MacLeod, licensed under Creative Commons Attribution 4.0.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

The store artwork, the ability icons and the achievement icons were made with AI image tools. Some 3D models and some sound effects were made with AI tools. The in-game text and its German translation were written with AI tools and edited by the developer. The code was written with AI coding tools. No AI content is generated during gameplay.

System Requirements

Windows
macOS
SteamOS + Linux
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 64-bit
    • Processor: 64-bit dual-core processor
    • Memory: 4 GB RAM
    • Graphics: Integrated graphics with WebGL 2 support
    • Storage: 500 MB available space
    • Additional Notes: Requires the Microsoft Edge WebView2 Runtime, which Windows 10 and 11 normally include.
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 11 64-bit
    • Processor: 64-bit quad-core processor
    • Memory: 8 GB RAM
    • Graphics: Dedicated graphics card with 2 GB VRAM
    • Storage: 1024 MB available space
    Minimum:
    • OS: macOS 11 Big Sur
    • Processor: Apple Silicon or 64-bit Intel processor
    • Memory: 4 GB RAM
    • Graphics: Integrated graphics with WebGL 2 support
    • Storage: 500 MB available space
    Recommended:
    • OS: macOS 13 Ventura or newer
    • Processor: Apple Silicon
    • Memory: 8 GB RAM
    • Graphics: Apple Silicon integrated graphics
    • Storage: 1024 MB available space
    Minimum:
    • OS: 64-bit distribution with WebKitGTK 4.1, such as Ubuntu 22.04
    • Processor: 64-bit dual-core processor
    • Memory: 4 GB RAM
    • Graphics: Integrated graphics with WebGL 2 support
    • Storage: 500 MB available space
    Recommended:
    • OS: Ubuntu 24.04 or a current 64-bit distribution
    • Processor: 64-bit quad-core processor
    • Memory: 8 GB RAM
    • Graphics: Dedicated graphics card with 2 GB VRAM
    • Storage: 1024 MB available space
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