Games like Space Ace

"Starward Rogue" is a twin-stick shooter roguelite where you play as a "head in a mech" from the neck of a Space Hydra. Explore evolving catacombs, choose from 9 starting mechs with unique abilities, and encounter 150+ enemies across 500+ rooms. Level up and buy upgrades through the perk system to create varied builds. Play with keyboard+mouse or gamepad.

Ring Runner combines the fast-paced action of space combat with the rich story and skill variety of an RPG. Trek across the universe in a 30 hour long story-driven campaign based on a companion Sci Fi novel, or challenge 6 scenarios alone, cooperatively, or competitively through local or online multiplayer.

Livelock is a Science Fiction Shooter game that offers both single-player and co-op multiplayer modes for up to 2 players. With a compelling plot, fantastic graphics, and engaging gameplay, players assume the role of a Capital Intellect fighting against corrupted machines to restore humanity. The game provides a rich and immersive experience, perfect for fans of the shooter genre.

"Hammerwatch is a Fantasy Hack and Slash game with outstanding graphics, stellar music, and exceptional gameplay. Play solo or with up to four players in local, online, or LAN co-op. Customize your experience with adjustable difficulty, character development, and unlockable skills. With mod and editing support, there's lots of replayability in this action-adventure game."

Assault Android Cactus is a vibrant, arcade-style shooter where players control android heroes fighting against waves of robotic enemies. With a variety of distinctive characters, each with unique weapons and abilities, the game offers a dynamic and engaging experience. The game features a campaign mode with high replay value, as well as local co-op for up to four players, making it a great choice for fans of frantic, action-packed gameplay.

"Insanely Twisted Shadow Planet" is a 2D action-adventure shooter game set in a unique fantasy world. Players can choose to embark on a single-player journey or team up with a friend in multiplayer co-op mode. As they explore alien environments and battle strange creatures, they can solve puzzles and upgrade their ship with advanced technology to save their home world. The goal is to reach the center of the mysterious Shadow Planet.

"It Came From Space, and Ate Our Brains" is a top-down zombie shooter where players fend off endless waves of undead using a variety of weapons. The full version offers more levels, diverse armaments, a cooperative multiplayer mode, and care packages to aid survival. It’s a fast-paced, action-packed experience focused on intense, cooperative zombie combat.

"Savant: Ascent" is a rhythm-based platformer game where players control a hero named Savant who uses his music abilities to fight enemies and traverse through levels. The game features a unique combination of fast-paced action and dynamic music that intensifies as players progress through the levels. Players must master the rhythm and timing to overcome various obstacles and defeat bosses to reach the top.

GALAK-Z is a single-player Science Fiction Shooter game with phenomenal game mechanics and beautiful graphics. It offers procedurally generated worlds, challenging A.I. enemies, and anime-inspired spacecraft. The Void DLC includes endless gameplay, online leaderboards, and a daily challenge for players to compete worldwide. Additionally, Arcade Mode allows players to replay failed missions without losing progress.

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.