Mainframe Defenders on Steam - User reviews, Price & Information

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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.

Mainframe Defenders is a exploration, tactical rpg and traditional roguelike game developed and published by Synthetic Domain.
Released on February 25th 2020 is available on Windows and Linux in 13 languages: English, Russian, Hungarian, German, Portuguese - Portugal, French, Italian, Spanish - Spain, Polish, Simplified Chinese, Korean, Japanese and Portuguese - Brazil.

It has received 691 reviews of which 609 were positive and 82 were negative resulting in a rating of 8.3 out of 10. 😎

The game is currently priced at 0.49€ on Steam with a 90% discount.

The Steam community has classified Mainframe Defenders into these genres:

Exploration Tactical RPG Traditional Roguelike Rogue-lite Sandbox Rogue-like Strategy RPG 2D Mechs Isometric Turn-Based Combat Procedural Generation Pixel Graphics Military Minimalist Atmospheric Futuristic 1990's 1980s

Media & Screenshots

Get an in-depth look at Mainframe Defenders through various videos and screenshots.

Mainframe Defenders screenshot
Mainframe Defenders screenshot
Mainframe Defenders screenshot
Mainframe Defenders screenshot
Mainframe Defenders screenshot
Mainframe Defenders screenshot
Mainframe Defenders screenshot

System requirements

These are the minimum specifications needed to play the game. For the best experience, we recommend that you verify them.

Windows
  • 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
Linux
  • OS: Ubuntu 14.04 LTS
  • Processor: Intel Celeron
  • Memory: 2048 MB RAM
  • Storage: 200 MB available space
  • Additional Notes: Requires a 64-bit processor and operating system

User reviews & Ratings

Explore reviews from Steam users sharing their experiences and what they love about the game.

March 2025
Please for the love of god allow us to refund upgrades or change them, permanent unit upgrades (especially from a misclick) is so horribly frustrating. Other than that, good strategy rogue-like.
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March 2025
Lovely little game, found it while browsing the sales like the cheap-ass I am, and found this little gem. Nice variety of Mechs, Upgrades and Items. Requires paying attention to positioning, prioritizing the right enemies and accurately building your Mechs to synergize and cover eachother weaknesses. Also the soundtracks are bangers.
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March 2025
This game is actually quite simple than I first thought when I began playing, so that's good for me, since I don't play Tactical RPGs often. But man, this game had me sucked in for quite a while. I finished playing in hard mode, and while it kicked my butt in the beginning, after a while, getting a grasp of the mechanics and whatnot, I still wanna continue playing and unlock some cool gear, experiment with builds till I can't anymore. Really fun little game. This is a great gateway to more of these types of games, which I am now a fan of. Try it out! Literally cheaper than a Hershey's bar lol.
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Oct. 2024
I'll be honest, I suck at this game xD. But it is pretty damn good, especially considering the price/quality ratio. It's very complex, and it's very hard to get a build going, but it feels very good if you do (even though it happens rarely). The lack of guides doesn't help. The complexity of this game is both a blessing and a curse. I found it to be a bit too complex for me, but I definitely see the appeal. Would recommend.
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June 2024
I did not expect to enjoy this game so much. It is very simple, somewhat questionable but serviceable AI behaviour, it has repetitive missions. But the progression, weapon and item synergies, squad possibilities make for all those faults. Climbing the game's difficulty after learning how to min max and combo is very satisfying. It has enough weapon variety to keep you going. If you are a fan of turn based squad games, I can 100% recomment it.
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Frequently Asked Questions

Mainframe Defenders is currently priced at 0.49€ on Steam.

Mainframe Defenders is currently available at a 90% discount. You can purchase it for 0.49€ on Steam.

Mainframe Defenders received 609 positive votes out of a total of 691 achieving a rating of 8.28.
😎

Mainframe Defenders was developed and published by Synthetic Domain.

Mainframe Defenders is playable and fully supported on Windows.

Mainframe Defenders is not playable on MacOS.

Mainframe Defenders is playable and fully supported on Linux.

Mainframe Defenders is a single-player game.

Mainframe Defenders does not currently offer any DLC.

Mainframe Defenders does not support mods via Steam Workshop.

Mainframe Defenders does not support Steam Remote Play.

Mainframe Defenders is enabled for Steam Family Sharing. This means you can share the game with authorized users from your Steam Library, allowing them to play it on their own accounts. For more details on how the feature works, you can read the original Steam Family Sharing announcement or visit the Steam Family Sharing user guide and FAQ page.

You can find solutions or submit a support ticket by visiting the Steam Support page for Mainframe Defenders.

Data sources

The information presented on this page is sourced from reliable APIs to ensure accuracy and relevance. We utilize the Steam API to gather data on game details, including titles, descriptions, prices, and user reviews. This allows us to provide you with the most up-to-date information directly from the Steam platform.

Additionally, we incorporate data from the SteamSpy API, which offers insights into game sales and player statistics. This helps us present a comprehensive view of each game's popularity and performance within the gaming community.

Last Updates
Steam data 12 June 2025 00:35
SteamSpy data 07 June 2025 19:24
Steam price 15 June 2025 04:26
Steam reviews 14 June 2025 15:59

If you'd like to dive deeper into the details about Mainframe Defenders, we invite you to check out a few dedicated websites that offer extensive information and insights. These platforms provide valuable data, analysis, and user-generated reports to enhance your understanding of the game and its performance.

  • SteamDB - A comprehensive database of everything on Steam about Mainframe Defenders
  • SteamCharts - Analysis of Mainframe Defenders concurrent players on Steam
  • ProtonDB - Crowdsourced reports on Linux and Steam Deck Mainframe Defenders compatibility
Mainframe Defenders
-90% 4.90€ 0.49€
8.3
609
82
Game modes
Features
Online players
5
Developer
Synthetic Domain
Publisher
Synthetic Domain
Release 25 Feb 2020
Platforms
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