FORTRESS DEFENDER
Developed by opmregisters · Published by opmregisters
At a glance
Overview
An action, indie game by opmregisters, published by opmregisters — single-player.
Steam’s own one-line description: “This game, "FORTRESS DEFENDER", is a side-scrolling power-up shooting game with an 80's flavor. Defeat the enemies that appear one after another, dodge their attacks, and aim for the boss that lurks in the depths of the stage. There are a total of eight stages with various tricks and bosses.” — developer/publisher text via the Steam store page.
Reception & community
Review sentiment, ownership and peak-concurrent estimates via SteamSpy; tags are player-voted on Steam. Estimates change over time.
Features & modes
Derived from the gameplay modes and feature categories Steam lists for FORTRESS DEFENDER.
| Feature | Supported |
|---|---|
| Single-player | Yes |
| Multiplayer | No |
| Co-op | No |
| Online co-op | No |
| PvP | No |
| Cross-platform multiplayer | No |
| Full controller support | No |
| Partial controller support | Yes |
| Steam Cloud saves | No |
| Steam Achievements | No |
System requirements (PC)
As published on the Steam store page. Requirements can change between updates.
Minimum
- OS *: Windows7(SP1 or later), Windows 8, Windows10 or later
- Processor: x86 or x64(SSE2 supported), 1.6GHz or higher
- Memory: 4 GB RAM
- DirectX: Version 10
- Storage: 400 MB available space
Recommended
- OS *: Windows7(SP1 or later), Windows 8, Windows10 or later
- Processor: x64(SSE2 supported), 2.0GHz or higher
- Memory: 8 GB RAM
- DirectX: Version 10
- Storage: 400 MB available space
Supported languages (2)
FORTRESS DEFENDER FAQ
Answered from the official Steam listing as of June 2026. Where something hasn't been announced, we say so rather than guess.
What kind of game is FORTRESS DEFENDER?
Steam classifies FORTRESS DEFENDER as a Action, Indie game, developed by opmregisters. This game, "FORTRESS DEFENDER", is a side-scrolling power-up shooting game with an 80's flavor. Defeat the enemies that appear one after another, dodge their attacks, and aim for the boss that lurks in the depths of the stage. There are a total of eight stages with various tricks and bosses.
How much does FORTRESS DEFENDER cost?
As of June 2026, Steam lists FORTRESS DEFENDER at $4.99. Prices and regional pricing change — check the Steam page for the current figure.
Is FORTRESS DEFENDER single-player or multiplayer?
Steam lists these modes for FORTRESS DEFENDER: Single-player. It lists a single-player mode.
Is FORTRESS DEFENDER on PlayStation, Xbox, or Switch?
Our data comes from the Steam (PC) store, which lists FORTRESS DEFENDER for Windows. Console availability isn’t in our Steam-sourced data — check the official site or the console store.
Is FORTRESS DEFENDER out yet?
Yes — Steam lists a release date of Sep 22, 2021.
What platforms is FORTRESS DEFENDER on?
FORTRESS DEFENDER is listed for Windows on the Steam (PC) store. Console availability isn't covered by Steam's PC store data — check the official channels.
Is FORTRESS DEFENDER single-player or multiplayer?
Steam lists these modes: Single-player.
How much does FORTRESS DEFENDER cost?
Steam lists it at $4.99.
Who made FORTRESS DEFENDER?
FORTRESS DEFENDER is developed by opmregisters and published by opmregisters.
Where to get FORTRESS DEFENDER
We don't sell games or track prices — this links to the official Steam store page.
View on Steam →Listing details from Valve's public Steam store data. Not affiliated with Valve/Steam, opmregisters.