Single-player games like De-coding Armageddon
Below are 8 single-player Steam games similar to De-coding Armageddon, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like De-coding Armageddon page.
Ranked picks
- 1
GALXAGAR
Single-player alternative to De-coding Armageddon — playable solo, no multiplayer required. Shares Action with De-coding Armageddon.
"Don't go to GALXAGAR"; a phrase uttered by many who have traversed its rim. Untold treasures, and terrors, await within its blackened depths. Ready your craft, spacefarer, because you're about to enter the most dangerous sector in all the stars. Get ready.. for GALXAGAR!
- 2
Viral Reload EX
Single-player alternative to De-coding Armageddon — playable solo, no multiplayer required. Shares Action and Indie with De-coding Armageddon.
Viral Reload EX is a shoot-em-up with a dash mechanic where you shrink down to fight infections at a microscopic scale! Can you defeat the evil Kyle Kaboom before he destroys the moon?
- 3
Deathroids
Single-player alternative to De-coding Armageddon — playable solo, no multiplayer required. Shares Indie with De-coding Armageddon.
Remember the golden age of arcades playing a game with all the classic 80's/90's space-shooting features. See how far you can go by destroying all enemy robots that are ready to planet earth attack.
- 4
Beat Hazard
Single-player alternative to De-coding Armageddon — playable solo, no multiplayer required. Shares Action and Indie with De-coding Armageddon.
Experience your music collection like never before with this intense music driven arcade shooter. Each of your songs will have its own unique ebb and flow based on the music.
- 5
Distant Space
Single-player alternative to De-coding Armageddon — playable solo, no multiplayer required. Shares Action and Indie with De-coding Armageddon.
Distant Space are present the arcade game of cosmic fights in arcade style of the 80's, this is a game where you can control the spaceship and forced to destroy extraterrestrials, which are moving in the certain order.
- 6
Vectorium
Single-player alternative to De-coding Armageddon — playable solo, no multiplayer required. Shares Action and Indie with De-coding Armageddon.
Vectorium is a classical, yet intense arcade shooting game. Can you survive those dreadful enemies and barrage of gunfire?
- 7
GRADIUS ORIGINS
Single-player alternative to De-coding Armageddon — playable solo, no multiplayer required. Shares Action with De-coding Armageddon.
Salamander III is the newest addition to the Gradius series, a legendary pioneer in the side-scrolling shooter genre, and comes with the original arcade versions of the previous games.
- 8
Double Kick Heroes
Single-player alternative to De-coding Armageddon — playable solo, no multiplayer required. Shares Action and Indie with De-coding Armageddon.
Butcher loads of zombies in Rhythm with Metal! Survive on the highway to hell fighting an epic freakshow! Now with 30 levels of pure madness! 19 Licensed tracks and a Community Level Editor to import your own songs!