Project Hastur: Evolve Your Defenses in This Unique RTS Tower Defense

9/4/2026, 6:05:14 AM

Release date: 5/23/2019

Tags: #strategy #indie #tower-defense

User Reviews

Score: 89%Positive
Review Count: 19 reviews
Fetched At: 9/4/2026, 6:05:15 AM

Reference prices

Japan

Free to Play (JPY)

Steam JP

Free to Play (USD)

Steam

Live Store Snapshot

Body text may reflect the state at publication time. For the latest sale, price, and review changes, prioritize the live price panel, review panel, and the Steam store listing.

Japan Price: Free to Play
Global Price: Free to Play
Sale Status: Regular pricing
Price Checked At: 9/4/2026, 5:45:10 AM

Key highlight

Project Hastur is a free-to-play 3D tower defense and RTS hybrid where enemies evolve using biologically accurate models, responding dynamically to your strategies. Utilize upgradable turrets, airstrikes, and robots to d

Who this is for

A surprisingly deep free-to-play tower defense/RTS where evolving enemy AI and strategic counterplay create intense battles.

Details

Overview

Project Hastur is a free-to-play title that boldly merges 3D tower defense with real-time strategy, all wrapped in a compelling biological evolution theme. Developed and published by Polymorphic Games, with a contribution from the University of Idaho, this game challenges players to defend against alien Proteans that adapt and evolve using biologically accurate models. The core gameplay loop revolves around facing creatures whose unique genomes dictate their abilities, behaviors, and even their appearance. Success in repelling waves means those tougher enemies will reproduce, leading to even more challenging offspring in subsequent encounters. This dynamic system ensures that the alien evolution directly responds to your strategic choices, making each playthrough a fresh and unpredictable experience.

Highlights

Features a unique blend of 3D tower defense and real-time strategy mechanics.
Enemies, known as Proteans, evolve using biologically accurate models, adapting to player strategies.
Players can utilize four upgradable turret classes, alongside airstrikes and combat robots, to defend their base.

Who It's For

This game is ideal for players who enjoy strategic thinking and are looking for a fresh take on the tower defense genre. If you appreciate games where enemy AI dynamically adapts to your tactics and enjoy the concept of biological evolution influencing gameplay, Project Hastur offers a unique challenge. It's also a great option for those seeking a free-to-play strategy experience with multiplayer capabilities.

Game Info

Project Hastur was released on May 23, 2019, and is developed and published by Polymorphic Games. It supports multiplayer and Steam Cloud saves, and is available for family sharing. The game is free to play and has received a positive reception from Steam users. It is currently available only in English.