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Cover of Mainframe Defenders

Mainframe Defenders

by Big Way

MAINFRAME DEFENDERS - turn-based tactics centered around gear and unit customization. It offers simple combat, high replayability, and tons of loot.

Nintendo Switch · Released Oct 22, 2021

+ I own it

Age rating content: Mild Fantasy Violence.

Languages: Japanese, English, Spanish, French, German, Italian, Portuguese, Russian, Korean, Chinese

Screenshots

About this 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 are combined with procedural generation to create random levels. Missions have differing objectives, combined with unique mission conditions. Will you accept the challenge or avoid the unknown and risk falling behind? • PROGRESSION SYSTEM: Victory or defeat, the game is not over yet! Unlock new units, each with a unique set of upgrades and load-outs. Unlock new items to bolster your new strategies.

Prices by country

Cheapest today: 🇳🇿 New Zealand, $1.16 (−88%, sale ends Nov 8, 2026). That is 17% below the typical price across eShops today. Lowest price since October 2026, when we started tracking it.

CountryPrice
New Zealand On sale until Nov 8, 2026 -88% $9.67 $1.16
Sweden On sale until Nov 8, 2026 -89% $11.09 $1.23
Poland On sale until Nov 8, 2026 -88% $10.65 $1.28
Norway On sale until Nov 8, 2026 -88% $11.27 $1.30
Australia On sale until Nov 8, 2026 -88% $10.94 $1.31
South Africa On sale until Nov 8, 2026 -88% $11.36 $1.36
Austria On sale until Nov 8, 2026 -88% $11.71 $1.40
Belgium On sale until Nov 8, 2026 -88% $11.71 $1.40
Bulgaria On sale until Nov 8, 2026 -88% $11.71 $1.40
Cyprus On sale until Nov 8, 2026 -88% $11.71 $1.40
Germany On sale until Nov 8, 2026 -88% $11.71 $1.40
Denmark On sale until Nov 8, 2026 -88% $11.76 $1.39
Estonia On sale until Nov 8, 2026 -88% $11.71 $1.40
Spain On sale until Nov 8, 2026 -88% $11.71 $1.40
Finland On sale until Nov 8, 2026 -88% $11.71 $1.40
France On sale until Nov 8, 2026 -88% $11.71 $1.40
Greece On sale until Nov 8, 2026 -88% $11.71 $1.40
Croatia On sale until Nov 8, 2026 -88% $11.71 $1.40
Hungary On sale until Nov 8, 2026 -88% $11.71 $1.40
Ireland On sale until Nov 8, 2026 -88% $11.71 $1.40
Italy On sale until Nov 8, 2026 -88% $11.71 $1.40
Lithuania On sale until Nov 8, 2026 -88% $11.71 $1.40
Luxembourg On sale until Nov 8, 2026 -88% $11.71 $1.40
Latvia On sale until Nov 8, 2026 -88% $11.71 $1.40
Malta On sale until Nov 8, 2026 -88% $11.71 $1.40
Netherlands On sale until Nov 8, 2026 -88% $11.71 $1.40
Portugal On sale until Nov 8, 2026 -88% $11.71 $1.40
Romania On sale until Nov 8, 2026 -88% $11.71 $1.40
Slovenia On sale until Nov 8, 2026 -88% $11.71 $1.40
Slovakia On sale until Nov 8, 2026 -88% $11.71 $1.40
Czechia On sale until Nov 8, 2026 -88% $12.00 $1.44
United Kingdom On sale until Nov 8, 2026 -88% $12.68 $1.51
United States On sale until Nov 9, 2026 -83% $11.99 $2.03
Canada On sale until Nov 9, 2026 -83% $12.02 $2.10
Switzerland On sale until Nov 8, 2026 -88% $17.90 $2.15
Brazil On sale until Nov 9, 2026 -80% $11.19 $2.19
Mexico On sale until Nov 9, 2026 -83% $13.18 $2.31

Click a country to see how to buy there; new to buying abroad? Here is how it works. Prices are as each eShop lists them: VAT included where the eShop includes it, US prices before sales tax, and for Canada we add the 5% federal tax Nintendo leaves out · fetched up to 2026-11-05 02:38 UTC · not sold in 3 countries.

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