Single-player games like Space Crusaders
Below are 9 single-player Steam games similar to Space Crusaders, 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 Space Crusaders page.
Ranked picks
- 1

Sharded World
Single-player alternative to Space Crusaders — playable solo, no multiplayer required. Shares Action and Indie with Space Crusaders.
Sharded World is a reversed bullet hell, rogue-lite, ARPG game combining simple gameplay and great rpg progression. Each level has its own unique features and challenges. Upgradable characters, weapons and orbs. Challenges, daily quests, and leaderboards. Fight, get stronger and defeat the Lich!
- 2

Slime 3K: Rise Against Despot
Single-player alternative to Space Crusaders — playable solo, no multiplayer required. Shares Action and Indie with Space Crusaders.
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

ARRIVAL: ZERO EARTH
Single-player alternative to Space Crusaders — playable solo, no multiplayer required. Shares Action and Indie with Space Crusaders.
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.
- 4

REPLIKATOR
Single-player alternative to Space Crusaders — playable solo, no multiplayer required. Shares Action and Indie with Space Crusaders.
In this twin stick roguelite shooter, you play as one of the galactic mercenaries, explore a mysterious scientific complex and uncover the secret of the REPLIKATOR project.
- 5

Survivors of the Dawn
Single-player alternative to Space Crusaders — playable solo, no multiplayer required. Shares Action and Indie with Space Crusaders.
A roguelite horde-survival bullet heaven with QUINTILLIONS of bullets over QUINTILLIONS of hordes. Mix weapons with items, modify, control chaos at terminals and break through tightening waves.
- 6

Kitty's Last Adventure
Single-player alternative to Space Crusaders — playable solo, no multiplayer required. Shares Action and Casual with Space Crusaders.
Cute Survivor where you play as Kitty the cat aboard her flying cat-saucer🛸 created by her distraught human.
- 7

Time Wasters
Single-player alternative to Space Crusaders — playable solo, no multiplayer required. Shares Action and Indie with Space Crusaders.
Time Wasters is a space shooter bullet heaven roguelite. Equip and upgrade weapons, destroy swarms of enemies, and collect Time & Space Cubes to bend the timeline to your advantage.
- 8

NIMRODS
Single-player alternative to Space Crusaders — playable solo, no multiplayer required. Shares Action and Indie with Space Crusaders.
Assemble a limitless arsenal in this survive-em-up roguelite shooter. As a Gun Manufacturer's testing force, your mission is simple: test the latest gun tech and scavenge alien planets. Collect insane weapon parts to invent crazy guns that slay thousands. You may not survive, but your guns will!
- 9

Vampire Survivors
Single-player alternative to Space Crusaders — playable solo, no multiplayer required. Shares Action and Indie with Space Crusaders.
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!