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Mainframe Defenders cover

Mainframe Defenders

A Role-playing (RPG) game by Old Byte Apps, released in 2020

No Rating🔴Niche / Inactive⏳Proton PendingPlayStation 4LinuxPC (Microsoft Windows)

MAINFRAME DEFENDERS - tactical retrofuturistic strategy game. A computer virus have infiltrated Microlinc Dynamics AI controlled research complex. While AI itself is intact, most of its subservient units are controlled by virus. Lead squad of 4 prototype units on mission to defend complex mainframe. You'll have to repel assaults, destroy unit fabricators, download valuable data, clear infected nodes and do more on your way to deepest parts of the complex. Work around item limitations and drawbacks to build powerful combinations. Destroy your enemies with diverse tactics: overheat them, melt with corrosion, absorb damage and return fire. But don't rely on a single strategy too much - enemies might have a way to counter it. But above everything else: defend the Mainframe! * RETRO STYLE: Graphics, inspired by 80s terminal PC with hybrid synthwave soundtrack. * DIVERSE TACTICS: Cook enemy robots to death, bury them under your bullets, eliminate with single powerful shot, or render your opponents useless with debuffs - this game is designed with a lot of viable strategies in mind. * BUILD YOUR SQUAD: Similar to how in card games you have to build your deck, in MAINFRAME DEFENDERS you have to combine different items with unique abilities, to create unstopable squad. Work around item drawbacks or double down on them, creating flawed, yet powerful build! Over 100 obtainable items in demo version alone! * UNIQUE ENEMIES: Enemy squad woun't sit idle, though. Each unit have its own role in squad, and designed to couter certain strategies. Pick your targets wisely, or you will lose. * PROCEDURAL LEVELS: Hand-made rooms are combined with procedural generation to create random levels. Missions have differing objectives, combined with unique mission conditions. Will you accept the challenge or avoid the unknown and risk to fall behind?

Single player

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Mainframe Defenders Download Size

The official download size for Mainframe Defenders is 2 GB. Based on current hardware prices, this installation consumes approximately $0.12 worth of SSD storage space.

Standard Install

File Size

2GB

Est. SSD Cost

$0.12USD
100 Mbps
My Internet Speed100 Mbps
Quick Presets

Estimated Time to Install

2 mins

Is Mainframe Defenders Dead?

Live player count and server population analysis.

🔴Niche / Inactive
1Players Online

There are currently 1 people playing Mainframe Defenders, indicating a niche or private community. Coordinate via Discord for best results.

Current Activity24h Peak: 1.2
Estimated Match Wait: Long Wait / Discord Required
Live Data from SteamAPI

Where is the Mainframe Defenders save file?

Manual backup locations for PC, Mac, and Linux.

Steam Cloud Supported
Copy
%USERPROFILE%\AppData\Local\MainframeDefenders\Saved\SaveGames

How to backup manually on Windows

  1. Press Win + R to open the Run dialog.
  2. Paste the path above and press Enter.
  3. Locate the save files (usually .sav, .json, or similar).
  4. Copy the entire folder to a backup location.
Copy
~/Library/Application Support/MainframeDefenders/Saves

How to backup manually on Mac

  1. Open Finder and press ⌘ + Shift + G.
  2. Paste the path above and click Go.
  3. Locate the save files in the folder.
  4. Duplicate the folder to create a backup.
Copy
~/.local/share/MainframeDefenders/Saves

How to backup manually on Linux

  1. Open a terminal and use cd to navigate to the path.
  2. Or use your file manager and press Ctrl + L to enter the path.
  3. Locate the save files (.sav, .json, or game-specific format).
  4. Copy the folder with cp -r or your file manager.
Source: PCGamingWiki ↗

Is Mainframe Defenders Steam Deck Compatible?

SteamOS and Linux Proton performance analysis.

Valve Official🚫Unsupported
Community Rating⏳ Proton Pending

Performance Analysis

Compatibility data for Mainframe Defenders is currently mixed. Check recent ProtonDB reports for specific launch commands.

Confidence: Moderate
See 1 user configs ↗

Can I Run Mainframe Defenders?

PC system requirements - Minimum vs Recommended specs.

Mainframe Defenders has modest requirements. Most gaming PCs from the last 5 years should handle it.

Minimum1080p / 30 FPS
  • 💻
    OSWindows 7 or later
  • ⚡
    CPUIntel Celeron
  • 🧠
    RAM2048 MB RAM
  • 💾
    Storage200 MB available space
Recommended1440p / 60 FPS
    Download Size
    2 GBSmall

    Mainframe Defenders Review Score

    Pending critic evaluation. Check back soon for the official verdict.

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