Single-player games like Seacurity Breach
Below are 9 single-player Steam games similar to Seacurity Breach, 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 Seacurity Breach page.
Ranked picks
- 1
Kingdom Rush Origins - Tower Defense
Single-player alternative to Seacurity Breach — playable solo, no multiplayer required. Shares Strategy and Indie with Seacurity Breach.
Command your elven army and defend mystical lands from sea serpents, evil sorcerers, and wave after wave of gnoll tribesman, all with the help of brand-spankin’ new towers, heroes, and spells to fend off every last baddie.
- 2
Age of Defense
Single-player alternative to Seacurity Breach — playable solo, no multiplayer required. Shares Strategy and Indie with Seacurity Breach.
Age of Defense is a tower defense game full of mind-blowing mayhem. There are tons of monsters and tough defenders in the game each of which fits perfectly into a funny cartoonish setting.
- 3
Immortal Defense
Single-player alternative to Seacurity Breach — playable solo, no multiplayer required. Shares Strategy and Indie with Seacurity Breach.
Immortal Defense is a story-driven tower defense game in which you give up your body and life to become an immortal "path defender", and defend your home world from destruction, forever. The game takes place over millions of years. Is there anything you would give up everything to defend?
- 4
Fort Defense
Single-player alternative to Seacurity Breach — playable solo, no multiplayer required. Shares Strategy and Indie with Seacurity Breach.
All hands on deck! Pirate armada dead ahead! Take part in an uncompromising struggle repelling freebooters' assaults. Watch out, the enemy may catch the tide for ruining your fortress. Build towers, collect crystals, upgrade spells and believe in your victory!
- 5
Ghostrunner 2
Single-player alternative to Seacurity Breach — playable solo, no multiplayer required. Shares Strategy and Adventure with Seacurity Breach.
Blood will run in Ghostrunner 2, a hardcore FPP slasher set in a post-apocalyptic cyberpunk future. Become the ultimate cyber ninja and prepare for epic boss fights, improved skills, an interactive story, new game modes, and captivating synthwave soundtrack.
- 6
Aegis Defenders
Single-player alternative to Seacurity Breach — playable solo, no multiplayer required. Shares Strategy and Indie with Seacurity Breach.
Take on wild beasts, ruthless soldiers, and ancient gods in this 2D Action-Platformer inspired by Tower-Defense combat.
- 7
The Riftbreaker
Single-player alternative to Seacurity Breach — playable solo, no multiplayer required. Shares Strategy and Indie with Seacurity Breach.
The Riftbreaker is a solo or Co-op base-building, survival game with Action-RPG elements for up to 4 players. Hack & slash countless hordes of enemies. Build up your base, craft powerful weapons and research new inventions to survive.
- 8
Deathtrap
Single-player alternative to Seacurity Breach — playable solo, no multiplayer required. Shares Strategy and Indie with Seacurity Breach.
Deathtrap is a Tower Defense game with strong action-RPG elements, a game of vicious tricks, killing machines, rotating blades and splattering blood.
- 9
Rezrog
Single-player alternative to Seacurity Breach — playable solo, no multiplayer required. Shares Indie and Adventure with Seacurity Breach.
Test your fighting spirit as you take your party of brave adventurers on an epic quest to restore peace to the lands of Rezrog in this table-top inspired, turn-based, dungeon crawler. Upgrade your skills & tactically exploit enemy weaknesses as you try to handle everything the dungeons will throw at you.