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.
Common questions
Is it really free?
Yes. MarZ: Tactical Base Defense Demo is free right now on Steam, with nothing to pay.
Is this the full game?
No. A demo is a portion of MarZ: Tactical Base Defense Demo — usually the opening section — published so you can try it. It is free permanently, but it is not the complete game.
Where do I claim it?
On the official Steam page. We link straight there — we never host game files or act as a middleman.
More demos on Steam
4| Time left | Cover | Title | Type | Store | Was | Action |
|---|---|---|---|---|---|---|
| Ends 31 December 2026 at 23:59 UTC |
|
DAVE THE DIVER - Godzilla Content Pack | DLC | Steam | — | Claim DAVE THE DIVER - Godzilla Content Pack on Steam, opens a new tab |
| No deadline | JAYWALK: An Endless Arcade Hopper Game | Free to play | Steam | — | Claim JAYWALK: An Endless Arcade Hopper Game on Steam, opens a new tab | |
| No deadline | Grid Tactics: Duel | Free to play | Steam | — | Claim Grid Tactics: Duel on Steam, opens a new tab | |
| No deadline |
|
Explosive Odds - Supporter Pack | DLC | Steam | — | Claim Explosive Odds - Supporter Pack on Steam, opens a new tab |