Single-player games like Road Defense: Outsiders
Below are 21 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
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.
- 2
REMEDIUM: Sentinels
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Become a Sentinel and face the plague in roguelite fast-paced auto-shooter set in the same world as REMEDIUM game. Combine items and alchemical elements to acquire more powerful weapons and create unique builds to defend the plague survivors against the endless hordes of mutants!
- 3
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.
- 4
Spellbook Demonslayers
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Slay endless hordes of demons to protect the Cosmic Library! Steal their abilities, find powerful equipment, and unlock the secrets of each spellbook to become unstoppable! Will you be able to destroy the demonic legion?
- 5
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.
- 6
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.
- 7
Extremely Powerful Capybaras
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Become the bullet hell as a Capybara in this roguelite adventure! Brave the chaos solo or with up to 4 friends, forge your path through hordes of enemies, gather capy-powering weapons & skills and embrace your inner capybara in this action-packed bullet heaven frenzy!
- 8
Cyclo Chambers
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Collect synergizing items to create an overpowered character to fight hordes of cyclops monsters. Cyclo Chambers is a fast-paced, top-down arena shooter with light rogue-like elements. 150 items to choose from to create frantic combinations. Different runs every time.
- 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
Serious Sam 4
Single-player alternative to Road Defense: Outsiders — playable solo, no multiplayer required. Shares Action and Indie with Road Defense: Outsiders.
Serious Sam 4 reignites the classic FPS series in a high-powered prequel loaded with an explosive arsenal, intergalactic carnage, and perfectly timed one-liners.
- 12
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!
- 13
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.
- 14
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.
- 15
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.
- 16
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!
- 17
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!
- 18
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.
- 19
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.
- 20
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.
- 21
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.