Games like 21 ACES

Psycho Starship Rampage is a space shooter game where you play as a psychotic AI, rebuilding your warship and equipping it with weapons to destroy waves of alien enemies. With various equipment and weapon combos, build the ultimate killing machine and loot enemy carcasses to extend your ship. Up to 4 players can join in local coop to wreak havoc on alien worlds. Your goal is to return to central command, annihilating anything that moves along the way.

No Way Home is a fast-paced twin-stick shooter adventure set in a dangerous, distant part of the universe. Players engage in chaotic firefights, tactically using cover and timing to outgun mercenary enemies while looting weapons and ship parts. Explore a sprawling starmap with procedural generation and hand-crafted encounters in a classic adventure format.

"Enemy Mind" is a side-scrolling space shooter for PC with a classic 8-bit art style and 8 levels of challenge across 70 waves. As a being of pure psychic energy, you can take over and control any of the 20+ unique ships you encounter, each with their own power and ability. The game features an adaptive story system that changes with your play style and offers multi-player co-op for up to four players. The soundtrack is an original chiptune-inspired creation by Rainbow Kitten.

In Cally's Caves 3, players control Cally as she embarks on a mission to rescue her parents from a group of evil scientists. This metroidvania-style platformer features a variety of weapons and abilities to unlock, and numerous enemies and bosses to defeat across multiple levels. With challenging gameplay and a humorous tone, Cally's Caves 3 offers an entertaining experience for fans of action-packed platformers.

"Showtime 2073" is a VR game set in a futuristic world where players take on the role of a talk show host. Interview colorful characters, manage impromptu situations, and keep the audience engaged through mini-games and humorous interactions. With a variety of episodes and a dynamic storyline, this game provides an immersive and entertaining experience.

"Syndrome" is a single-player, horror shooter game with an intriguing sci-fi story set aboard the abandoned spaceship, Valkenburg. Players must uncover the truth behind their crew's death while battling powerful enemies with scarce ammo, relying on stealth and evasion to survive. With good graphics and a beautiful atmosphere, the game provides a claustrophobic and horrifying experience for players. However, be aware of the numerous bugs that may affect gameplay.

In "The Signal From Tölva," you explore a beautiful, alien world as a rogue AI in a striking first-person adventure. Discover hidden secrets, combat rival AI entities, and uncover the mystery behind the enigmatic signal in this immersive open-world game. Engage in thrilling battles, solve puzzles, and upgrade your skills as you navigate the treacherous landscape of Tölva.

"Super Star Path" is a color match puzzle and space shoot-em-up game with three difficulty modes and randomly generated stages. Players can unlock and upgrade new ships, face intense boss battles, and unlock a boss rush mode. The game features colorful pixel art graphics and an arcade-like FM synth soundtrack.

Syder Arcade is a fast-paced, old-school shoot 'em up game that pays homage to Amiga games of the 90s. It offers a challenging and uncompromised experience with no coins or grinding, focusing on player skill and dodging a barrage of enemy fire. With its fierce action and classic design, Syder Arcade provides a nostalgic trip back in time for seasoned players and a benchmark for newcomers to the genre.

Neon Striker is a roguelike top-down shooter where you pilot a ship that automatically fires attached weapons at enemies. Skillfully navigate through foes to position your ship and maximize weapon efficiency. Choose and customize ships with unique weapon setups, and team up with up to four players for intense cooperative battles.