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:$0.89
- Release Date:2/25/2020
- Franchise:Synthetic Domain
- Developer:Synthetic Domain
- Publishers:
- Last Updated:5/3/2026
- 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 5 concurrent players online and in-game. This is 100% lower than its previous all-time peak of 1,256 players achieved on 3/18/2025.
Review History Chart
Track historical review trends and overall ratings for Mainframe Defenders. It has received a total of 768 reviews on the Steam store and achieved a Player Score of 82 (Very Positive).
Price History Chart
Track historical price changes and trends for Mainframe Defenders. Right now, it costs $0.89 in the Steam Store.
Community Hub Members & Followers Chart
Explore the cumulative breakdown of Steam community hub members for Mainframe Defenders and its growth over time. It currently has 4,605 followers on its community page.
About Mainframe Defenders
Mainframe Defenders is an Indie, Strategy, and RPG game developed by Synthetic Domain. On 2/25/2020, it was released on the Steam Store by Synthetic Domain, and BLACKBALANCE GAMES.
Players have rated Mainframe Defenders as "Very Positive" out of 768 total reviews on the Steam Store. These are split between 671 positive reviews and 97 negative reviews — an overall 87% positive review rating.
It is available for gamers to download and play for $0.89 which is a 85% discount off its base price. It can also be purchased through 🔬 Cell Command × Mainframe Defenders 🖥: Roguelike Tactics, Digital GOD, Synthetic_Games_vol.1, Zero Stress King x Mainframe Defenders, Mech War!, Adrenaline and Tactics, Mech Battle, Void Miner X Mainframe Defenders, Synthetic_Games_vol.3, and Turn-Based RPG which give a discount off its base price.
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 functionaliy 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:
- Custom Volume Controls
- Family Sharing
- Single-player
- Steam Achievements
- Steam Trading Cards
- Playable without Timed Input
- Adjustable Difficulty
- Touch Only Option
- Mouse Only Option
- Save Anytime
- Keyboard Only Option
- 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 10 bundles in the Steam Store.
| Image | Name | Apps | Packages | Price | Actions |
|---|---|---|---|---|---|
 | 🔬 Cell Command × Mainframe Defenders 🖥: Roguelike Tactics | 2 | 2 | $10.51 | View |
 | Digital GOD | 2 | 2 | $4.54 | View |
 | Synthetic_Games_vol.1 | 2 | 2 | $7.09 | View |
 | Zero Stress King x Mainframe Defenders | 2 | 2 | $5.29 | View |
 | Mech War! | 2 | 2 | $9.25 | View |
 | Adrenaline and Tactics | 3 | 3 | $11.77 | View |
 | Mech Battle | 2 | 2 | $16.78 | View |
 | Void Miner X Mainframe Defenders | 2 | 2 | $5.85 | View |
 | Synthetic_Games_vol.3 | 3 | 3 | $7.16 | View |
 | Turn-Based RPG | 6 | 6 | $30.35 | 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 realtime 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. (2026, May 3). Mainframe Defenders on Steam. Steam Store. https://store.steampowered.com/app/1184810
- Valve Corporation. (2026, May 3). Mainframe Defenders. Steam Community Hub. https://steamcommunity.com/app/1184810
- Synthetic Domain. (2023, July 7). Mainframe Defenders. Mainframe Defenders. https://linktr.ee/syntheticdomain