Single-player games like Rule No. 1
Below are 11 single-player Steam games similar to Rule No. 1, 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 Rule No. 1 page.
Ranked picks
- 1
HYPER DEMON
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
HYPER DEMON is an FPS like no other. a pearl of lightning. a dream from the future. a drop of poison. a swan song. The faster you slay demons, the harder the game and the higher your score. There is an end. Will it see you?
- 2
Swarmlake
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
Swarmlake is an ultra-intense first-person shooter ballet about fighting a record-breaking swarm.
- 3
CROSSBOW: Bloodnight
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action with Rule No. 1.
CROSSBOW: Bloodnight is a frantic score-attack arena shooter set in a world of camp horror and gore. Master the occult powers of your automatic crossbow and fight for every second of survival against a relentless demonic horde! Hunt. Die. Hunt again.
- 4
LONE RUIN
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
Venture into an old, magical ruin to seek an ancient power in this highly replayable roguelike twin-stick shooter. Optimise spells and build ultimate combos to defeat twisted monstrosities and delve deeper into the Lone Ruin.
- 5
ARMORED HEAD
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
ARMORED HEAD is a miniature shooter, where all the action takes place in one arena. The main character is a gladiator who fights against his opponents in pursuit of the grand prize.
- 6
Drunken Robot Pornography
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
Bullet-hell, boss-battle, first-person shooter, with giant-robots, martinis and jetpacks. YES. Drink the cocktails. Fight the titans. Make your own Titans. Drink your friend's cocktails.
- 7
Ziggurat
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
Dungeon-Crawling First Person Shooting at its finest! Fast-paced combat! Dozens of perks, spells and enemies! Level ups! Random Dungeons! Traps! Badass bosses! Carrots!
- 8
Deadlink
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
Get ready to put a sizable dent in the profits of megacorporations in Deadlink, a guns-blazing cyberpunk FPS with roguelite elements. Your mission is to conduct covert ops while piloting a humanoid combat shell. And no, "covert" doesn’t mean "quiet."
- 9
Devil Daggers
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
Devil Daggers is a fast-paced shooter that places you in an abyssal arena to face endless legions of demons. Armed with versatile magic daggers and a fluid movement system, fight to survive as long as you can.
- 10
Rule No. 2
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
Because sometimes all that you really want from life is to be blowing up a bunch of $#!% while also gazing at some chesticles -- as fast and as expeditiously as possible. Sturgeon General's WARNING: 'Risk of Waifus, Guns, Nudity, Instant Action and Mayhem.'
- 11
Rule No. 3 Downpour
Single-player alternative to Rule No. 1 — playable solo, no multiplayer required. Shares Action and Indie with Rule No. 1.
An arcade arena-shooter FPS about slipping into the flow-state and getting directly to the action as fast as humanly possible. Get overwhelmed by enemies and compete with your friends for hi-scores!