Data source: Steam Web APILast updated: How we collect this data
Mainframe Defenders player count chart
Mainframe Defenders has very few players on Steam right now (1). Its all-time peak was 9.
History from Oct 11, 2026
Mainframe Defenders monthly player count
| Month | Avg. players | % Gain | Peak players |
|---|---|---|---|
| November 2026 | not enough data | -55.56% | 4 |
| October 2026 | not enough data | n/a | 9 |
How many people are playing Mainframe Defenders?
At this moment Mainframe Defenders has 1 concurrent players on Steam. That makes it the #16,258 most played game on Steam at the moment. In the last 24 hours it peaked at 1 players. Today's peak is 67% below its 30-day average daily peak of 3.
Mainframe Defenders player count trend
Today's player count is 11% of its all-time peak of 9, set on Oct 25, 2026.
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Compare Mainframe Defenders with similar games
Player counts, peaks, reviews and prices side by side. Compare any Steam games
About 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.
- Developer
- Synthetic Domain
- Released
- Feb 25, 2020
- Genre
- Indie, RPG, Strategy
- Steam Deck
- Playable
- Languages
- 13 languages
Screenshots
Mainframe Defenders price history
Good time to buy? Probably wait for a sale. Mainframe Defenders is at its full price of $4.48. It usually goes on sale for about 89% off (around $0.49), and the lowest we have recorded is $0.65.Next Steam sale: Steam Winter Sale, Dec 17 to Jan 4. See the countdown
US price on Steam. Checked daily.
How many copies has Mainframe Defenders sold?
We estimate Mainframe Defenders has sold 14K to 35K copies on Steam, based on how many Steam reviews it has. At the prices it has actually sold for, that is roughly $35K to $90K in gross revenue.
These are estimates, not official sales figures. How we estimate sales.
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Mainframe Defenders reviews over time
Positive and negative Steam user reviews per month, from Steam's review history.
Mainframe Defenders achievements
Mainframe Defenders has 14 Steam achievements. On average a player has unlocked 2.4% of them; the rarest, Effective Manager, is held by 1.3% of players.
Mainframe DefendersComplete the final mission4.5%- Rust BucketKill a unit with 60+ Corrosion stacks3.9%
- EmployeeFinish the game on Easy difficulty3.6%
- Long Term StrategyApply 5 different status effects on a single enemy3.4%
- Middle ManagerFinish the game on Normal difficulty2.7%
- Heat DeathKill a unit while this unit has 3 times the max heat2.5%
- Valuable PropertyFinish the game without any squad unit deaths2.1%
- Assets HolderComplete Matter Raid and pick up 5 caches1.9%
- FirewallFinish a game with unit having 70+ hull or 15+ armor1.9%
- RNDUnlock all units and items1.6%
- Vice PresidentFinish the game on Hard difficulty1.6%
- CEOFinish the game on Very Hard difficulty1.3%
- EconomyFinish the game without using rare items1.3%
- Effective ManagerFinish the game while having 1000+ matter1.3%
Global unlock rates from Steam, most common first.
Latest Mainframe Defenders news and patch notes
- Mar 19, 2026 Our 6th anniversary continues > and all with a spring mood!🌸
- Mar 9, 2026 Mainframe Defenders Celebrates Its 6th Anniversary
- Dec 23, 2025 Winter sale❄️
- Oct 6, 2025 [ Lords of Ravage ] NO MERCY. NO HEROES! From October 15, 2025
- Sep 23, 2025 Thanks for 2000 wishlists!
- Jun 30, 2025 🖥Summer Sale × Synthetic Domain Wins Award🔬
- Feb 28, 2025 [ 5th Anniversary ] 🤖Mainframe Defenders🤖 [90% off]
- Feb 19, 2025 Super Bundles Blast sale!
Official announcements from the developer on Steam.
Mainframe Defenders FAQ
Is Mainframe Defenders dead?
Mainframe Defenders has very few players on Steam right now (1). Its all-time peak was 9.
How many people play Mainframe Defenders?
1 people are playing Mainframe Defenders on Steam right now. In the last 24 hours it peaked at 1 concurrent players.
What is the all-time peak player count for Mainframe Defenders?
Mainframe Defenders reached its all-time Steam peak of 9 concurrent players on Oct 25, 2026.
How much does Mainframe Defenders cost?
Mainframe Defenders costs $4.48 on Steam in the US. Prices are checked daily and can differ by region.
What is the lowest price Mainframe Defenders has been on Steam?
The lowest US price we have recorded for Mainframe Defenders on Steam is $0.65 (89% off), on Oct 13, 2026. It costs $4.48 right now.
Is Mainframe Defenders on sale right now?
No, Mainframe Defenders is at its full price of $4.48 on Steam right now. In past sales it usually dropped about 89%, and the biggest discount we have seen is 89%.
Is Mainframe Defenders good?
Steam players rate Mainframe Defenders Very Positive: 88% of 691 reviews are positive.
When did Mainframe Defenders come out?
Mainframe Defenders was released on Steam on Feb 25, 2020.
Who made Mainframe Defenders?
Mainframe Defenders was developed by Synthetic Domain.
How many copies has Mainframe Defenders sold?
We estimate Mainframe Defenders has sold 14K to 35K copies on Steam, based on how many Steam reviews it has. This is an estimate, not an official figure, because Steam does not publish sales.
RageQuit.gg is not affiliated with Valve Corporation. Steam and the Steam logo are trademarks of Valve Corporation. Player counts come from the official Steam Web API. How we measure Steam data.