Mainframe Defenders Steam Charts, Sales, Players & Wishlists

Mainframe Defenders is tagged as Indie, RPG, Strategy. It is published by Synthetic Domain and released on 25 Feb, 2020. PureGameStats tracks Mainframe Defenders's live Steam player count, all-time peak, review sentiment, estimated sales and price history. Mainframe Defenders currently has 2 players on Steam. Its recorded all-time peak is 500 concurrent players on 05 July 2026. Current activity is 99.6% below peak. PureGameStats estimates 19,900 Steam units sold. Steam reviews are 88% positive across 796 responses. Platforms: Linux, Windows.

Games Mainframe Defenders

Mainframe Defenders Steam Charts, Sales, Players & Wishlists

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.

Developer
Synthetic Domain
Publisher
Synthetic Domain
Platforms
Linux, Windows
Release Date
25 Feb, 2020
Est. Sales
19,900
PGS estimate High confidence
Current Players
2
Live Steam data Peak 500
Current Steam Price
$0.59
Store data Standard Edition
Estimates are modelled by PureGameStats using multiple data signals. Direct data is sourced from Steam. View methodology โ†’

Mainframe Defenders Concurrent Players Updated hourly

Mainframe Defenders header image
Developer: Synthetic Domain
Publisher: Synthetic Domain
Platforms: Linux, Windows
Release Date: 25 Feb, 2020
Est. sales: 19,900 High confidence
Retailer Price (US) Discount
Gameseal $0.59 -

Pricing History & Best Deals

View on Steam

Historical pricing on Steam (US).

$5.99
Steam Launch Price
Steam
$5.99
Steam Current Price
Steam
$5.99
Steam Lowest Price
Steam
$0.59
Lowest Recorded
GameSeal
$0.59
Current Lowest Price
GameSeal โ†’
Steam Prices Around the World
Live Steam pricing across 9 currencies we track.
View all prices Hide prices
AU
A$ 7.50
BR
R$17,40
CA
C$ 6.40
CH
CHF 5.40
CL
CLP$3.100
HK
HK$ 35.00
IN
โ‚น260.00
NO
55,00 kr
TR
$4.49

Newest snapshot: 09 Sept 2026.

Mainframe Defenders Discord Community

Join Discord
284
Members
Total
43
Online now
Live

Mainframe Defenders Steam Reviews

Total reviews 796 Positive 697 Negative 99 Positive % 87.6%Rating Very Positive

Review Cloud

Reviewers praise
turn basedsquadbased strategytacticsrobotsbased tacticsroguelitebreachrogueretro stylefront missionenemy botsmainframeslaser squadstrategies
Reviewers criticise
mechstacticalmechunitsxcomroguelikecogmindunitretromissionstrategytactical roguelitemissionsmfdbased tactical

What players are discussing

Praise and criticism mentions per topic, split by whether the reviewer recommended the game overall. Based on 300 recent English reviews (ingested 26 Aug 2026).

Ticks mark the typical silhouette for a Indie game - overshoot = above the genre norm on that side.

Topic
Criticism mentions Praise
Mentions
Performance
Not enough mentions
-
Gameplay
31
144
175
Story
24
32
Graphics
30
63
93
Audio
10
52
62
Controls
6
Bugs
13
18
Value
25
54
79
Multiplayer
Not enough mentions
-
Replay value
19
91
110
PC System Requirements
Minimum and recommended hardware needed to run Mainframe Defenders.
View full requirements Hide requirements
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

Recommended:
  • Requires a 64-bit processor and operating system
  • Additional Notes: Requires a 64-bit processor and operating system
Frequently Asked Questions
Find quick answers about release date, pricing, platforms and more.
View FAQs Hide FAQs

How many people are playing Mainframe Defenders right now?

Mainframe Defenders has 2 concurrent players on Steam right now.

What is the all-time peak player count for Mainframe Defenders?

Mainframe Defenders reached an all-time peak of 500 concurrent players on 05 July 2026.

How many copies has Mainframe Defenders sold on Steam?

PureGameStats estimates Mainframe Defenders has sold approximately 19,900 copies on Steam, with high confidence. The estimate is derived from Steam reviews, concurrent player peaks and achievement completion rates.

How is Mainframe Defenders rated on Steam?

Mainframe Defenders has 796 Steam reviews with a 87.6% positive rating (Very Positive).

What is the current price of Mainframe Defenders?

Mainframe Defenders is priced at $5.99 on Steam. Full price history and best deals are tracked on this page.

When was Mainframe Defenders released?

Mainframe Defenders was released on 25 Feb, 2020. It was developed by Synthetic Domain.

Coverage & Updates

Latest from the official channels and across the games media.

  • No official announcements yet.

News & Media Coverage

No coverage yet.

Games like Mainframe Defenders

Similar games based on tags, genre and audience.

View more games