Mainframe Defenders overview

Overview

Mainframe Defenders comes from Synthetic Domain and is published by Synthetic Domain. It arrived on Steam on Feb 25, 2020, and it sits naturally among Single-player, Steam Achievements, Steam Trading Cards, Adjustable Text Size, Custom Volume Controls, Adjustable Difficulty, Keyboard Only Option, and Mouse Only Option. SteamPulse tracks it across Windows, Linux, Steam, Xbox, and PlayStation so readers get a quick useful snapshot, not just a wall of numbers.

Players and reviews

Mainframe Defenders's latest SteamPulse observation recorded 0 players at 26 September 2026 - 08:51:51 UTC, with a tracked peak near 1,229. This peak is the highest value in the available SteamPulse record and may not include activity before tracking began. Player reaction is 87% positive across 768 reviews.

Language and system requirements

Mainframe Defenders is available in 13 languages including:

4 regional rating boards including dejus, usk, steam germany, and igrs

Sales, recommendations, and streams

Mainframe Defenders has sold up to 23,850 units and has 724 Steam recommendations. The estimated VGI revenue is $109,000. On Twitch, 0 streamers are live with around 0 total watchers.

Mainframe Defenders overview details

Mainframe Defenders combines live player counts with reviews, pricing, platform support, Store metadata, dated player history, media, recent news, and related games.

Steam Store description

Next Game: The Bunker Notes About the Game MAINFRAME DEFENDERS Tactical retrofuturistic strategy game. A computer virus has infiltrated the "Stargazer" research complex. Most of the robotic units are controlled by the virus. Lead a squad of 4 prototypes on a 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 the deepest parts of the complex. Work with 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 a 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 an unstoppable squad. Work with item drawbacks or double down on them, creating flawed, yet powerful build! * UNIQUE ENEMIES: Enemy squad won't sit idle, though. Each unit has its own role in the squad and designed to counter certain strategies. Pick your targets wisely, or you will lose. * PROCEDURAL LEVELS: Hand-made rooms ar…

SteamPulse editorial summary

Mainframe Defenders is listed as a game with $5.99. It supports Windows and Linux, belongs to Single-player, Steam Achievements, Steam Trading Cards, Adjustable Text Size, Custom Volume Controls, Adjustable Difficulty, Keyboard Only Option, and Mouse Only Option, and is associated with Indie, RPG, and Strategy. SteamPulse's latest observation records 0 players at 26 September 2026 - 08:51:51 UTC, a tracked peak of 1,229, and 87% positive reviews.

Highlighted achievements

Support and legal notes

Real questions answered from SteamPulse data, including live players, monthly momentum, review sentiment, regional audience signals, Twitch activity, and current Steam pricing.