Single-player games like Roscarian Defender
Below are 8 single-player Steam games similar to Roscarian Defender, 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 Roscarian Defender page.
Ranked picks
- 1
UFO Survival
Single-player alternative to Roscarian Defender — playable solo, no multiplayer required. Shares Action and Indie with Roscarian Defender.
Pilot through relentless waves of hostile forces in this fast-paced space-themed, bullet hell, survival shooter. Build your own UFO in the Ship Creator, Survive through a 100-wave campaign, or test your limits in Endless Mode. How long can you survive?
- 2
Exterminators of Saturn
Single-player alternative to Roscarian Defender — playable solo, no multiplayer required. Shares Action with Roscarian Defender.
A top down, twin stick shooter inspired by classic retro arcade games with loads of enemies, fast paced bullet hell combat, big boss battles and tons of bullets.
- 3
Vanisha
Single-player alternative to Roscarian Defender — playable solo, no multiplayer required. Shares Action and Indie with Roscarian Defender.
A progression-driven twin-stick shooter. Customize ships, combine powerful chips, and forge unique builds through a massive talent tree as you race to stop the Anomaly.
- 4
Diced Up!
Single-player alternative to Roscarian Defender — playable solo, no multiplayer required. Shares Action and Indie with Roscarian Defender.
Survive as long as you can in an endless bullet hell with randomized stats and weapons.
- 5
Cowboy In Space
Single-player alternative to Roscarian Defender — playable solo, no multiplayer required. Shares Action and Indie with Roscarian Defender.
Be THE Cowboy in this top down shooter that allows you to upgrade your health, dash speed, and sword strength, as well as 19 weapons, with the souls you collect from your slain enemies!
- 6
Exterminate Zombies: Get Paid
Single-player alternative to Roscarian Defender — playable solo, no multiplayer required. Shares Action and Indie with Roscarian Defender.
Exterminate zombies in style with up to 4 players in this action packed co-op top-down shooter.
- 7
Astro Ike
Single-player alternative to Roscarian Defender — playable solo, no multiplayer required. Shares Action and Indie with Roscarian Defender.
Astro Ike is an exhilarating single-player, third-person zombie wave shooter that will immerse you in an intense battle for survival. Step into the shoes of Astro Ike, a fearless protagonist, as you face relentless waves of zombies. The challenge awaits—how long can you endure?
- 8
Blast Them All
Single-player alternative to Roscarian Defender — playable solo, no multiplayer required. Shares Action and Indie with Roscarian Defender.
Reload your weapon, the show's about to start! Blast Them All is a wave-based twin stick shooter where you face endless hordes of hungry zombies. Use your agility, pick up weapons and activate traps to defend yourself, build up your strength, collect points and reach the top of the leaderboard!