Single-player games like Road Defense: Outsiders
Below are 20 single-player Steam games similar to Road Defense: Outsiders, 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 Road Defense: Outsiders page.
Ranked picks
- 1
Void Scrappers
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action with Road Defense: Outsiders.
Blast hordes of alien ships into junk. Collect the scrap to upgrade your ship into an unstoppable force of destruction. Unlock new characters and weapons and upgrade your stats between runs.
- 2
Slime 3K: Rise Against Despot
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Welcome to Slime 3K, an unhinged roguelite bullet-heaven set in the Despot’s Game universe! Build a deck of crazy weapons, grow stronger and devour hordes of pink puny humans as a murderous jelly blob on a warpath of death, violence and pretzels.
- 3
Yet Another Zombie Survivors
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
The Horde is coming but you're ready to fight it! Assemble your team and decide upon their enhancements to find the most efficient synergies against thousands of the undead. Survive. Then evolve. Then break all the limits in this deceivingly simple but addictive bullet heaven game.
- 4
Horde Hunters
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action with Road Defense: Outsiders.
Slay hordes of enemies on thrilling missions to save the humanity from a looming demon onslaught.
- 5
Rocket Rats
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action with Road Defense: Outsiders.
Rocket Rats is a survivors-like game where you defeat cheese-based astral bodies in space – as a rat! Clear waves of enemies, collect cheese, upgrade your gear, and conquer the moon!
- 6
ARRIVAL: ZERO EARTH
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Fight giant War of the Worlds -style aliens invading Finland during a Winter in the 90's. Build an army of local townspeople in this chaotic semi-autobattler roguelike. Navigate through different biomes to obliterate the aliens from cosmic dimensions.
- 7
Repetendium
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Repetendium is a top-down roguelike-lite shooter. Select from a rowdy group of characters to play as and wield an ever expanding variety of gear and items to conquer the underworld. Death awaits...
- 8
Twilight Survivors
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
A time-limited survival game infused with rogue-lite elements and an adorable art style! The world has plunged into darkness, and you are its sole beacon of hope. Will you endure until dawn, or succumb to repeated deaths in your quest? Fear not, for you can collect more coins to arm yourself!
- 9
Vampire Survivors
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!
- 10
Serious Sam 3: BFE
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter!
- 11
Bullet Heaven 2
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Bullet Heaven 2 is a bullet-hell shoot-em-up inspired by games like Touhou and Jamestown. It's all about shooting every cute thing that moves, while dodging hundreds of shiny bullets per second!
- 12
Horde Survivor
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Battle hordes of monsters in this top-down roguelite arena bullet hell game. Play alone or with up to 4 players online. Choose what character to play, what stat to gain, and which spell to learn. Every decision matters in your survival against the hordes of monsters.
- 13
Cat Slide Tiles
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Indie with Road Defense: Outsiders.
Move the sliding tiles to unblock a path for the kitten to walk to the exit.
- 14
Unlock The Cat
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required.
You need to move all the stones which prevent the little kitten.
- 15
Underland
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Strategy and Indie with Road Defense: Outsiders.
Use the elements at your disposal, such as excavators, pumps, plumbing, among others, to drill the soil to the indicated location. The dynamic scenario, fluid mechanics and the laws of physics must be manipulated correctly to achieve the goal. Find the city of Underland!
- 16
Underland: The Climb
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Strategy and Indie with Road Defense: Outsiders.
Use the elements of the scenery, such as picks and many others to drill the soil to the indicated location. Destructive terrain, fluid mechanics and the laws of physics must be handled correctly to solve the puzzles. Escape the city of Underland!
- 17
Farm Kitten - Puzzle Pipes
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required.
Help the kitten rotate the pipes to bring water to his farm. The more the kitten plants, the more money he has to fulfill his dreams as a cat.
- 18
Mining Cats
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required.
Mining Cats is a logic puzzle that involves blasting rocks and creating paths that connect mines of gemstones of the same color.
- 19
Jigsaw Bestiary
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required.
Let's put the pieces together and meet amazing creatures. Here, the true mythologies behind the monsters are explained after solving each jigsaw. The beasts were illustrated by Alexandre Rocha (@semdizer) in his unique artistic style.
- 20
No Cat Fights Here
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required.
Let's avoid catfights on the roof? Draw a path for each cat to follow and keep them from bumping into each other along the way.