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Operation STEEL

Operation STEEL

Operation STEEL is a roguelike shoot-em-up rendered in hand-drawn art. Blow up loads of enemies, destroy huge bosses, find weapons, and upgrade your load-out between levels. Combat the electronic legion across 20+ procedurally generated levels!

Released Jan 26, 2022 Developer Undermog Games Platforms Windows · Linux Action RoguelikeShoot 'Em UpBullet HellArcadeRogue-like
View on Steam ↗ $9.99 (US · as of 2026-05-16)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-28.

93.0%positive86 reviews
Recommended · 1 found this helpful

“A beautifully designed arcade game in the old-school tradition. And it was made by just one person using my favorite engine, Godot.”

— a player, Steam review · 81 hrs played
Recommended · 1 found this helpful

“8-bit side scroller bullet hell, pretty good and hard too!”

— a player, Steam review · 1 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-28.

52achievements
18.7%median completion
1.3%rarest: Hard Mode 10
73.1% of players 60.9% of players 60.8% of players 56.2% of players 56.0% of players 52.1% of players 48.6% of players 47.4% of players 46.3% of players 44.7% of players 43.4% of players 36.6% of players 35.9% of players 35.1% of players 34.8% of players 33.2% of players 30.6% of players 29.2% of players 27.6% of players 26.0% of players 25.9% of players 25.8% of players 24.6% of players 23.4% of players 21.5% of players 20.2% of players 18.7% of players 18.2% of players 17.9% of players 17.9% of players 17.4% of players 16.8% of players 15.8% of players 15.6% of players 14.9% of players 13.0% of players 12.9% of players 12.7% of players 11.5% of players 4.1% of players 3.3% of players 3.0% of players 2.3% of players 2.0% of players 1.8% of players 1.7% of players 1.5% of players 1.4% of players 1.4% of players 1.4% of players 1.4% of players 1.3% of players 73.1% 0% most earned rarest
Almost everyone has
73.1%Arcturus — Complete Level A
60.9%Cancer — Destroy Cancer
60.8%Tutorial — Complete the tutorial
Rarest badges of honor
1.3%Hard Mode 10 — Hidden achievement
1.4%Hard Mode 9 — Hidden achievement
1.4%Hard Mode 8 — Hidden achievement

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 22, 2024
v1.4.8

To celebrate the release of Operation STEEL on Switch here is a small patch to make the game a bit more friendly for new players! Thanks everyone for your support! Changelog: Increase player health on

Jun 19, 2024
Switch Release and price change!

To coincide with Operation STEEL being released on Nintendo Switch, the Steam version's price is being reduced to match the Switch version! The new price is $10 USD. Thanks to everyone who has support

Mar 22, 2024
v1.4.6

Changelog: A few fixes for high refresh-rate monitors (First miniboss in Planet X, particularly.)

Mar 05, 2024
Minor Update

Increased some UI text sizes for better visibility on small screens.

Oct 02, 2023
v1.4.5

Changelog: Fix tutorial not resetting game mode Fix tutorial achievement not triggering correctly Fix menu allowing multiple inputs in quick succession

Games like Operation STEEL

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Tower of Guns Tower of Guns 81.9% · 1,056 reviews shares Perma Death, Replay Value, Action Roguelike, Shoot Em Up Star of Providence Star of Providence 97.0% · 2,836 reviews shares Perma Death, Replay Value, Action Roguelike, Shoot Em Up Steredenn: Binary Stars Steredenn: Binary Stars 88.2% · 618 reviews shares Score Attack, Action Roguelike, Shoot Em Up, Bullet Hell Super Amazing Wagon Adventure Super Amazing Wagon Adventure 95.5% · 1,701 reviews shares Perma Death, Replay Value, Action Roguelike, Shoot Em Up Spelunky Spelunky 92.0% · 11,568 reviews shares Perma Death, Replay Value, Action Roguelike, Procedural Generation Time Wasters Time Wasters 86.4% · 1,460 reviews shares Action Roguelike, Shoot Em Up, Bullet Hell, Rogue Lite MOTHERGUNSHIP MOTHERGUNSHIP 76.2% · 1,250 reviews shares Perma Death, Replay Value, Action Roguelike, Bullet Hell Immortal Redneck Immortal Redneck 87.9% · 1,976 reviews shares Perma Death, Replay Value, Action Roguelike, Bullet Hell

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-28.

GenresAction, Indie
Player tagsAction Roguelike · Shoot 'Em Up · Bullet Hell · Arcade · Rogue-like · Procedural Generation · Perma Death · Rogue-lite · Score Attack · Difficult · Sci-fi · 2D (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Full controller support · Steam Trading Cards · Camera Comfort · Color Alternatives · Custom Volume Controls · Adjustable Difficulty
LanguagesEnglish, Japanese
ControllerFull support
Achievements52
Official sitehttps://undermog.com
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS *: Windows 7 Processor: 2 core processor Memory: 2 GB RAM Graphics: Support for OpenGL 3.3 Storage: 1 GB available space Additional Notes: Requires a 64-bit processor and operating system