Games like R-Shark

In "Revolution Ace," humanity is at risk of extinction, and players must infiltrate the AI core to win the war against machines. The game features a customizable ship and numerous weapon configurations, as well as realistic physics and the ability to fight a variety of enemies on air, land, and sea. Online and local two-player co-op are also available. The game is powered by the Unreal engine and offers a deeper, more tactical shoot'em up experience.

"Survive in Space" is a challenging skill-based space shooter where you, as Sasaki, fight against the alien Chronicles who have enslaved humanity. Discover over 50 levels and defeat 5 powerful bosses in this hardcore game with a focus on gameplay mechanics. Unleash your power with The Shadow, a primal being of hate, to confront your enemies.

Operation STEEL is a tactical first-person shooter that takes place in an alternate 1980s universe. Players can choose to be part of the Western Alliance or the Soviet Bloc, each with unique weapons and equipment. The game features objective-based multiplayer modes, where teamwork and strategy are essential to secure victory. Objectives vary from capturing bases to planting bombs, providing a variety of gameplay experiences.

"Cloud Cutter" is an adrenaline-pumping, aerial combat game set in a beautifully stylized world. Soar through the skies on customizable aircraft, engage in intense dogfights, and master a variety of weapons and abilities. With its thrilling gameplay and stunning visuals, "Cloud Cutter" offers a unique and immersive experience for fans of action-packed flight games.

Cosmonator is a single-player shooter game now available on Steam, featuring 40 hand-crafted levels, intense boss battles, and deep RPG-style character building. Customize your Cosmonator with over 30 passive upgrades and 40 unique spells, and test your skills in the endless gauntlet mode with leaderboards. With adjustable difficulty levels and controller support, Cosmonator offers a challenging and visually appealing experience for all types of players.

"Shooty Skies" is an endless-arcade shooter game where players dodge bullets, shoot enemies, and defeat bosses while collecting over 200 pilots across 20 terrains. The intensity can be adjusted from a casual to a challenging experience, and players can earn achievements and complete daily missions. With various weapons and power-ups, players must survive as long as they can in the skies.

"Duke of Alpha Centauri" is a thrilling space shooter game with stunning graphics and various levels, each featuring unique enemies and designs. As you progress, upgrade your ship's systems and unlock new ship upgrades to enhance your battle abilities. With adjustable difficulty settings, this game is accessible to players of all skill levels for endless space warfare fun.

In "Alltynex Second," players must reclaim Earth from AI dominance 40 years after ALLTYNEX, a Stellar-class Administrative Computer, tried to eradicate mankind. This 2.5D vertical scrolling shooting game features five stages, close-combat Blade melee attacks, and ranged options like Homing Lasers and the Buster Rifle. The fate of humanity rests on your shoulders as you battle drone armies and Guardian Soldiers to end the AI's reign.

"Asteroid Bounty Hunter" is a space shooter centered around the veteran hero John and his AI spaceship. The game features unique boss fights, defense of nearby planets from asteroids, and battles against other bounty hunters. The concept revolves around farming experience for upgrades and collecting mastery points from rival ships. — NO RELEASE DATE OR DEVELOPER/PUBLISHER MENTIONED.

"Strikers 1945" is a remake of the classic arcade shooting game from the 90s, now available for free on mobile devices. It features six World War II fighter planes, easy-to-learn controls, and offline play. The game also offers global leaderboards, achievements, and supports devices with low specifications.