Games like Artificial Extinction

Volcanoids is a base-building shooter with a unique steampunk drillship base and open-world survival elements. Alone or with up to 3 players, explore a constantly changing volcanic island, battle hostile robots, and craft, upgrade, and automate your drillship. Despite its pretty visuals, humor, and exceptional gameplay, it suffers from being poorly optimized and requiring lots of grinding. The game features a good story and provides a full co-op and single-player experience.

"Taur is a single-player action-strategy sci-fi game with wonderful mechanics and fabulous visuals. Command the Prime Cannon, unlock and upgrade weapons and abilities, and build defenses to withstand different types of attacks. Every object in the environment is destructible, providing a tactically engaging experience, but beware of the heavy grinding."

"Outpost: Infinity Siege" is a strategy game where players build their own outpost, gather resources, and explore different zones. The Vanguard Edition includes exclusive outpost components and a unique weapon with various attributes. Cooperative gameplay is also featured, allowing players to battle alongside others in various difficulty levels. Note: The above summary is based on the information provided in the game's description and is not an official summary.

"Battlevoid: Harbinger is a hard sci-fi space exploration game, combining turn-based strategy, real-time space battles, and roguelike elements. As a young commander, lead your fleet to unknown galaxies, making decisions about fleet and equipment while dealing with surprising elements and battling for survival. Strategy, tactics, and resource management are crucial in this challenging space adventure."

"Sentry" is a Science Fiction Shooter game that offers various play options, including single-player, co-op for 2 players, and multi-player. As a member of the SENTRY Defense Program, your mission is to protect your vessel while it flees across space, using an arsenal of weapons, traps, and environmental destruction to fend off alien boarders. If your SENTRY falls in battle, another crew member will be thawed to continue the fight, ensuring that defeat only changes the strategic landscape aboard the ship. The game boasts beautiful gameplay and outstanding visuals.

"Lumencraft is a Role Playing game with great gameplay and stellar visuals, offering both single-player and local multi-player in a co-op, split screen setting. Explore procedurally generated levels, build your base, dig tunnels, and battle darkness to find the precious Lumen, Humanity's only hope for survival."

Become king of pirates while sailing through seaports, battles, krakens & navy

Chernobylite is a single-player or co-op horror shooter RPG set in a hyper-realistic 3D scanned Chernobyl wasteland. As ex-employee Igor, you'll investigate your fiancée's mysterious disappearance, facing military, stalkers, supernatural creatures, and harsh environment. Build a base, craft, manage resources and companions, and prepare for a thrilling adventure of survival, conspiracy, horror, love, and obsession.

Deadzone: Rogue is an intense cooperative or solo action game where you battle through a biomechanical spaceship filled with hostile enemies and massive bosses. Customize and upgrade over 30 weapons with elemental effects to match your playstyle. Tackle each mission with adjustable difficulty, coordinating attacks to survive relentless waves of robotic foes.

"Age of Darkness: Final Stand" is a dark fantasy strategy game where players must lead their armies against an encroaching horde of nightmarish enemies. By constructing and upgrading buildings, recruiting units, and managing resources, players must hold out against the onslaught in a procedurally generated world. The game features a day-night cycle, strategic unit placement, and a unique "Necrostruct" mechanic that allows players to turn enemy structures into their own.