MarZ: Tactical Base Defense

Released Apr 2019

Build your defense base to fight back the undead hordes of Mars and secure the future of the red planet. MarZ is a game of strategy and tactical defense where you must carefully manage your crew and resources as you try to uncover the terrible secrets of the undead.

77% positive · 888 reviews

Done

All announced content has been released

High confidence

Done

All announced content has been released

High confidence

Where to buy

Steam Updated 12 Oct 2026 $21.99

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Evaluation

MarZ: Tactical Base Defense launched into full 1.0 release on April 4, 2019 after an 18-month Early Access period. The 1.0 release was a substantial package including a 20-mission story campaign with alternate endings, Skirmish mode, Outbreak mode, a map editor with Steam Workshop integration, Twitch integration, and full localization into nine languages. After launch, the developers shipped one post-launch content update: a free Survival Mode added on April 30, 2020, released as a one-year anniversary thank-you to the community. The most recent developer communication is a fourth anniversary post from April 1, 2023, which celebrated the game's milestone with a sale but contained no announcements of new content, roadmaps, or ongoing development plans. The phrasing "the battle is far from over" appears to be a thematic flourish tied to the game's zombie-defense theme rather than a commitment to future development — no specific content was announced. There is no DLC listed on the store, no unreleased content announced, and no roadmap pointing to future updates. The post-launch update history shows a single major free content drop (Survival Mode in April 2020), with no further major content in the three-plus years since. The last developer communication of any kind was on April 1, 2023 — over three years before today's date of June 27, 2026. With no sustained post-launch content cadence and no outstanding commitments, the game appears to have reached its completed state with the Survival Mode update in April 2020.

Evidence

Free Survival Mode added as a one-year anniversary update, the last major content release for the game. Developers thanked the community and noted they had been quieter lately.

news post · Apr 30, 2020 source content shipped

high

Game launched as 1.0 with a complete 20-mission campaign, Skirmish mode, Outbreak mode, map editor, Twitch mode, and nine-language localization after 18 months of Early Access.

news post · Apr 4, 2019 source content shipped

high

Media

Details

Developer

Giant Grey

Publisher

Giant Grey

Achievements

Platform

Windows

Controller

—

Steam Deck

Playable

Players

Single-player

Strategy Tower Defense RTS Tactical Indie Zombies Gore Base Building Management Sci-fi Difficult Mars Building Resource Management Atmospheric

About this game

20 mission story campaign: Hold off the zombie hordes and discover the terrible secrets of the red planet across a fully-fledged story campaign with alternate endings
Skirmish mode: Create customised procedurally-generated skirmishes as you battle back wave after wave of enemies
Outbreak mode: An intense game mode within Skirmish that brings you one immense zombie horde instead of multiple waves
Marsform map editor: Use powerful terraforming tools to sculpt custom maps and share on Steam Workshop
Research update: Increased technology options and unique new upgrades for all towers including repair drones, mines, tesla towers that can teleport zombies, mortars, prism lasers, and more
Reworked balancing: All three difficulty modes have been improved and updated in line with player feedback
Twitch Mode: When streaming the game on Twitch, viewers can choose to support or sabotage streamers’ efforts in real-time with powerful Twitch integration tools
Localisation: Translated into nine languages (English, English (US), German, French, Spanish, Brazilian Portuguese, Simplified Chinese, Russian and Polish)

Defend Your Base

Your top priority when arriving at the frontier is to secure all fronts as quickly and effectively as possible. The crew is awaiting your orders, use them to fight single attackers or to man your towers and buildings. The enemy will attack from all sides, your tactical skill will decide the outcome.

Research, Upgrade, Survive

Construct a power grid and manage your resources to build a strong defense. A host of weapons and various perks are at your disposal, which can change the face of the battlefield. Using the tech center and arms factory you’ll research new kinds of turrets and, if you survive long enough, super weapons.

Discover the Truth

It’s 2065 and humanity is preparing for the colonization of Mars. No one considered they might not be alone. As the first arrivals break ground on the red planet, the terrible truth emerges - a horde of undead cosmonauts already calls it home. Your mission is to uncover the hidden history of Mars, solve the mystery of the undead and lead humanity to a new future.

New Horizons Await

MarZ isn’t over when you reach the end of the story. Experience custom and campaign maps in Skirmish Mode where your tactics will be pushed to the limit.

Forming the Future

Marsform, the MarZ level editor is an an intuitive creation toolkit that allows anyone to create and share their very own custom maps, bringing endless possibilities to the action!