Single-player games like Kalzoon
Below are 8 single-player Steam games similar to Kalzoon, 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 Kalzoon page.
Ranked picks
- 1
Lab Inspect
Single-player alternative to Kalzoon — playable solo, no multiplayer required. Shares Action with Kalzoon.
As an inspector, you investigate the suspicious Tepas laboratory. Fight hordes of enemies in a dynamic 2D pixel-art shooter with a wide variety of weapons and hardcore gameplay.
- 2
UFO: The Ranch
Single-player alternative to Kalzoon — playable solo, no multiplayer required. Shares Action with Kalzoon.
Somewhere in South America, aliens have made contact. Visitors have not come in peace to Planet Earth... Open world third person shooter (TPS) game. Single player video game, compatible with Windows 8 / 8.1 / 10 / 11 The game locations are inspired by real places in South America.
- 3
KILL KILL KILL KILL
Single-player alternative to Kalzoon — playable solo, no multiplayer required. Shares Action with Kalzoon.
KILL KILL KILL KILL - Intense arena shooter featuring a space warrior annihilating invaders from the distant cosmos. You're the last line of defense against their domination. Destroy them with diverse weapons, tearing through hordes of enemies.
- 4
Myasoid
Single-player alternative to Kalzoon — playable solo, no multiplayer required.
Myasoid - This is an arena shooter about a huge worm that protects this planet from the invasion of dangerous alien ships.
- 5
Kokoro Ultimate
Single-player alternative to Kalzoon — playable solo, no multiplayer required. Shares Action with Kalzoon.
Defeat Ryzon and tame your inner beast in this hybrid 3D Fighter. Transform into a secondary fighter or activate a unique weapon to extend combos.
- 6
Slaughtra
Single-player alternative to Kalzoon — playable solo, no multiplayer required. Shares Action with Kalzoon.
Slaughtra is a arcade styled top-down horde shooter where you face off against an ever growing onslaught of enemies seeking nothing but to end you. Fight your way through and maybe somehow you'll find your way out of this nightmare...
- 7
Mechaguard
Single-player alternative to Kalzoon — playable solo, no multiplayer required. Shares Action with Kalzoon.
Mechaguard is an arena shooter where you have to create the perfect vehicle to destroy a huge horde of monsters.
- 8
Grimstar: Crystals are the New Oil!
Single-player alternative to Kalzoon — playable solo, no multiplayer required. Shares Action with Kalzoon.
Grimstar is a real-time strategy game with a story-based single-player campaign. Your brother's sudden death has hit you hard, but the laws of the corporation for which he laid down his life dictate that you must take his place until his contract is fulfilled...