Games like Intrusion

Stardiver is a sci-fi, single-player, action-adventure game where you pilot a ship, fight enemies, and slay Bosses. The game takes place entirely underwater.Stardiver will take you to an unknown world in which you’ll experience exciting fights, and discover new species and places. And you’ll take care of resources supply, crafting items in your base, and developing your own ship.

Moroi is a single-player adventure game set within the Cosmic Engine, a surreal, ever-shifting hellscape where truth is elusive and paranoia reigns. As an amnesiac prisoner condemned to eternal punishment, you navigate a twisting labyrinth filled with bizarre creatures and challenging puzzles. Escape offers freedom and the haunting revelation of your forgotten past.

Within the Cosmos is a first-person sci-fi RPG set in 2278, where humanity’s last hope lies in a distant star system. Awakened generations late, you find a fractured society and a deadly android threat. Navigate political tensions, unite factions, and uncover mysteries to shape humanity’s future.

"Guns n Zombies" is a thrilling post-apocalyptic game where you fight against hordes of robotized zombies infected by a nano-virus. With a variety of weapons, special abilities, and turrets, you'll embark on a dangerous journey through a randomly generated gameplay. The survival mode allows you to challenge yourself and compete with other Steam players, all while experiencing a true post-apocalyptic atmosphere.

DESCRIPTION You are Anton Cornwell, a Californian farmer. Recently, your ranch house is prey to strange and unexplained phenomena. Invaded from all sides, you need to be reactive by using your...

Mines of Mars Scifi Mining RPG is a single-player action game combining procedural mining with an ingenious story and gameplay. It features spectacular visuals, awesome music, and a unique atmosphere that delivers a hilarious yet immersive experience. While enjoyable, players should expect lots of grinding, annoying ads, and some bugs.

"BioGun is a single-player Science Fiction Shooter game with an interesting plot, masterful visuals, and spectacular music. As Bek, you must save the canine species from the Dooper Virus by aiding your dog's immune system, absorbing new powers, and exploring vital organs. Experience fast-paced side-scrolling action with an impressive array of weapons and unique boss battles."

"GIBZ is a shooting game with good graphics and masterful gameplay, offering both single-player and local/online co-op options for up to 2 players. The game features a base defense activity, where players build and defend their base against waves of enemies and bosses, earning coins to unlock and upgrade various items. With the ability to unlock new weapons, hats, and achievements, GIBZ provides a challenging and engaging experience."

In "INSOMNIA: The Ark," you explore a colossal, dying space metropolis filled with intrigue, danger, and diverse inhabitants. As a "low-class" citizen, you'll need to navigate the complex politics and cultures of this isolated society, while also uncovering mysterious forces threatening the Ark. Your choices and actions will significantly impact the narrative and faction relationships in this immersive, story-rich RPG.

"Zombie Playground is a cooperative multiplayer game with third-person shooter and action RPG elements, set in a zombie-infested school arena. Experience various enemy types, including a boss fight, and immerse yourself in a fun and immersive gameplay experience, alone or with friends."