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Mainframe Defenders

Mainframe Defenders

MAINFRAME DEFENDERS - Turn-based tactics centered around gear and unit customization. It offers simple combat, high replayability, and tons of loot. Items don't just provide stats boost, but also offer distinct mechanics that can be combined into powerful builds.

Released Feb 25, 2020 Developer Synthetic Domain Platforms Windows · Linux ExplorationTactical RPGTraditional RoguelikeRogue-liteSandbox
View on Steam ↗ $5.99 (US · as of 2026-05-12)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via SteamSpy as of 2026-05-12.

88.1%positive691 reviews
Recommended · 0 found this helpful

“Хороший пиксельный рогалик . Великолепная музыка . Приятное изучение вселенной , которую создал разработчик. Каждый из четырех существ набранных вами в отряд имеет четыре модуля под снаряжение , которые предстоит найти и собрать в нужные комбинации по пути ошибаясь и делая…”

— a player, Steam review · 11 hrs played
Recommended · 1 found this helpful

“This game caused me to learn to really appreciate games of its kind. I never appreciated the turn based strategy games before this one. I like RTS and turn based RPG very much. Never turn based strategy before. I am a fan of traditional roguelikes though. This game really caught…”

— a player, Steam review · 14 hrs played
Not recommended · 5 found this helpful

“Where is the option to hyperspeed enemy turns? Oh my GOD it's so boring waiting for the 15 enemy units to take their turns one by one. Literally cannot bring myself to play this game any more because of how slow it is.”

— a player, Steam review · 3 hrs played
Read more reviews ↗

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Mar 19, 2026
Our 6th anniversary continues > and all with a spring mood!🌸

Loading... 💾 \ Our best turn-based retro hits_ This passion project was released on October 15. If you like beautiful pixel art, a captivating story, and the chance to play as the bad guy - you should

Mar 09, 2026
Mainframe Defenders Celebrates Its 6th Anniversary

6 years old today! 🎉 Six years ago we released a small tactical cyberpunk experiment about defending a broken mainframe against rogue machines. Since then thousands of players have explored its corrup

Dec 23, 2025
Winter sale❄️

Lords of Ravage ❄️ The BUNKER NOTES A.I.M. War Protocol Join our community on Discord and follow us on X , for the latest updates_

Oct 06, 2025
[ Lords of Ravage ] NO MERCY. NO HEROES! From October 15, 2025

https://clan.akamai.steamstatic.com/images/39808920/e03d82778f113b1870fdcf6bd58da6b3883c030d.gif Hey, villains! A few days of light remain before we plunge into darkness. Drop the mask of the benefact

Sep 23, 2025
Thanks for 2000 wishlists!

https://clan.fastly.steamstatic.com/images/39808920/f2a0858bb32fa72b61847cca4ce631e7c4575fe4.gif We have passed the milestone of 2,000 wishlist additions - thank you for your support. This is only the

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-12.

GenresIndie, RPG, Strategy
Player tagsExploration · Tactical RPG · Traditional Roguelike · Rogue-lite · Sandbox · Rogue-like · Strategy · RPG · 2D · Mechs · Isometric · Turn-Based Combat (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Trading Cards · Adjustable Text Size · Custom Volume Controls · Adjustable Difficulty · Keyboard Only Option · Mouse Only Option
LanguagesEnglish, Russian, Hungarian, German, Portuguese - Portugal, French, Italian, Spanish - Spain, Polish, Simplified Chinese, Korean, Japanese, Portuguese - Brazil
Achievements14
Estimated owners200,000 – 500,000 (SteamSpy)
Official sitehttps://linktr.ee/syntheticdomain
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS *: Windows 7 or later Processor: Intel Celeron Memory: 2048 MB RAM DirectX: Version 10 Storage: 200 MB available space Additional Notes: Requires a 64-bit processor and operating system