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.
- Price:$5.99
- Release Date:2/25/2020
- Franchise:Synthetic Domain
- Developer:Synthetic Domain
- Publisher:Synthetic Domain
- Last Updated:10/23/2025
- Steam App Id:1184810
Mainframe Defenders
- Windows
- Mac
- Linux
- Steam Deck (Playable)
Steam Charts, Stats, and Live Player Count
At the moment, Mainframe Defenders has 1 concurrent player online and in-game. This is 100% lower than its previous all-time peak of 1,256 players achieved on 3/18/2025.
Mainframe Defenders Review
Mainframe Defenders has achieved a Steambase Player Score of 87 / 100. This score is calculated from 726 total reviews on the Steam store — giving it a Very Positive rating. These are split between 635 positive reviews, 91 negative reviews, and will be updated in real-time as more players leave their feedback.
Track historical reviews and overall rating trends for Mainframe Defenders using the chart below.
Mainframe Defenders Price
Mainframe Defenders costs $5.99 in the Steam store as of 10/23/2025. It can be purchased as a standalone game or through a bundle like 🔬 Cell Command × Mainframe Defenders 🖥: Roguelike Tactics, Digital GOD, Mech War!, Adrenaline and Tactics, Mech Battle, or Turn-Based RPG which offers a discount off the game's base price.
Explore the price history chart below to track historical price changes and other pricing stats for Mainframe Defenders.
About Mainframe Defenders
Mainframe Defenders is an Indie, RPG, and Strategy game developed by Synthetic Domain. On 2/25/2020, it was released on the Steam Store by Synthetic Domain.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Mainframe Defenders on the Steam Deck but some functionality may not be fully supported.
It also supports 13 languanges in-game including English, Russian, Hungarian, German, and Portuguese. Each language comes with varying levels of support for the in-game interface, audio, and fully translated subtitles.
According to Steam’s category system, Mainframe Defenders supports the following features:
- Touch Only Option
- Single-player
- Family Sharing
- Save Anytime
- Steam Achievements
- Playable without Timed Input
- Keyboard Only Option
- Mouse Only Option
- Adjustable Difficulty
- Custom Volume Controls
- Steam Trading Cards
- Adjustable Text Size
From the Steam community, Mainframe Defenders has been tagged with the following user tags:
- Tactical RPG
- Exploration
- Card Game
- Futuristic
- Minimalist
- Procedural Generation
- Isometric
- Sandbox
- Traditional Roguelike
- Tower Defense
- 1980s
- Mechs
- Turn-Based Tactics
- Strategy
- Indie
- 2D
- Roguelike
- Loot
- Difficult
- Roguelite
- JRPG
- Atmospheric
- Mining
- 1990's
- Pixel Graphics
- RPG
- Cyberpunk
- Turn-Based Strategy
- Turn-Based Combat
- Military
- Colorful
Media & Sceenshots
Watch the featured video for Mainframe Defenders and see the latest screenshots from the Steam Store.
Related Bundles
Mainframe Defenders is included in 6 bundles in the Steam Store.
| Image | Name | Apps | Packages | Price | Actions |
|---|---|---|---|---|---|
 | 🔬 Cell Command × Mainframe Defenders 🖥: Roguelike Tactics | 2 | 2 | $21.58 | View |
 | Digital GOD | 2 | 2 | $10.35 | View |
 | Mech War! | 2 | 2 | $13.58 | View |
 | Adrenaline and Tactics | 3 | 3 | $11.77 | View |
 | Mech Battle | 2 | 2 | $12.70 | View |
 | Turn-Based RPG | 6 | 6 | $22.03 | View |
Related Packages
Mainframe Defenders is referenced by 1 package in the Steam Store.
| Name | Price | Actions |
|---|---|---|
| Mainframe Defenders | $5.99 | View |
Supported Languages
Mainframe Defenders is available in 13 different languages with varying levels of support for the in-game interface, audio, and fully translated subtitles.
| Name | Interface | Audio | Subtitles |
|---|---|---|---|
| English | Yes | No | Yes |
| Russian | Yes | No | Yes |
| Hungarian | Yes | No | Yes |
| German | Yes | No | Yes |
| Portuguese | Yes | No | Yes |
| French | Yes | No | Yes |
| Italian | Yes | No | Yes |
| Spanish (Spain) | Yes | No | Yes |
| Polish | Yes | No | Yes |
| Chinese (Simplified) | Yes | No | Yes |
Frequently Asked Questions
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in real-time to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
Mainframe Defenders data has been sourced from:
- Valve Corporation. (2025, October 23). Mainframe Defenders on Steam. Steam Store. https://store.steampowered.com/app/1184810
- Valve Corporation. (2025, October 23). Mainframe Defenders. Steam Community Hub. https://steamcommunity.com/app/1184810
- Synthetic Domain. (2023, July 7). Mainframe Defenders. Mainframe Defenders. https://linktr.ee/syntheticdomain