Games like Hyperspawn

"ShipLord is a survival game set in space where players dodge asteroids and battle bosses to collect energy and progress through unique levels. A medal-based system rewards players with upgrade points for completing levels on higher difficulties, which can be used to upgrade shield, energy tractor, and force field abilities. With over 100 upgrade points available, players can improve shield and force field duration and cool down times, as well as decrease energy spawn time."

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.

"LUFTRAUSERS" is a single-player arcade game with awesome gameplay, ingenious graphics, and a perfect soundtrack. Customize your Rauser with over 125 deadly combinations, and take to the skies for epic battles against enemy planes and ships. With hilarious moments, lots of grinding, and high replayability, this game will keep you entertained for hours. Be aware of some bugs, but they don't detract from the overall experience.

"Heckabomb" is a single-player Science Fiction Shooter game for Windows, with support for both controller and mouse+keys play. The game features a circular arena with varied levels, upgradeable stats, six additional weapons, and numerous enemies, including boss warships and an alien ace pilot. With a spectacular arcade soundtrack, the game offers campaign, survival, and hardcore modes, as well as online hiscores. You play as the Heckabomber, the only surviving weapon after your home planet's destruction by aliens.

Survive epic space battles in an offline roguelike bullet heaven adventure

Ion Assault is a fast-paced arcade-style space shooter. Players maneuver through intense enemy waves, using a unique ion particle system to split and redirect bursts of energy. The game offers various modes, including a campaign with boss battles, survival, and online multiplayer. Success depends on speed, strategy, and precise control of the ion assault.

Starship Rubicon is a modern take on the classic space shooter genre. It's a smart and challenging rogue-lite that features a unique control scheme, pixel art remixed with NASA photographs, and an existential crisis about who is REALLY the monster.

Void Scrappers is a frantic, rogue-like 2D shooter set in a cyberpunk world. Assemble your loadout from a variety of weapons and abilities, and face off against hordes of enemies in procedurally generated levels. Fight for survival, collect scraps to upgrade your gear, and defeat powerful bosses to progress. Every run offers a new challenge, making Void Scrappers a highly replayable experience.

"ATOMINE is a fast-paced, procedurally generated twin-stick shooter with a minimalist design. Players must clear level areas of enemies to progress, while collecting XPs, energy, and weapon modules. The modular weapon system allows for unique customization, as modules can modify specific parts of the weapon such as bullet type and rate of fire."

"Capsized" is a Science Fiction arcade-style game with both single-player and local multi-player options for up to 2 players in a co-op, split screen format. The game features an immersive alien world with unique hand-drawn art, a stellar soundtrack, and challenging gameplay that combines platforming, puzzle-solving, and combat. Players must navigate through a perilous environment, fight off creatures, and save crewmates to escape the mysterious planet.