Games like (FERAS) Federation of the Empire from the Republic by the Alliance of SPACE.

A New Space Age! A retro arcade space shooter with more color and mayhem!  Protect the Planetary Defense Shield (PDS) from the onslaught of the alien Klaxxack invasion.  Manage your energy coins for they not only power the PDS, it's also currency for power ups! Balance between keeping your shield powered and buying upgrades to clear the screen of aliens.    Defend, destroy, and win!  …

Drox Operative is a space-themed action RPG where you are the captain of a spaceship. Your mission is to explore, trade, and complete quests while navigating a dynamic galaxy filled with various alien races. As you progress, you can upgrade your ship, hire crew members, and negotiate or battle with other spaceship captains to gain fame and power. Your actions can shape the galaxy's political landscape, leading to different endings.

"Utopia Must Fall" is a vector-style base defense arcade shooter with rapid progression and procedural attack waves. Players must defend the city's turret and choose upgrades wisely from a sizable tree, with options ranging from beefing up weapons to strengthening shields and deploying automated turrets. The game is easy to learn, with automatic firing, and offers fast-paced progression to suit various playstyles.

Spacejacked is a fast-paced arcade tower-defense game where you play as a spaceship technician named Dave, fighting off relentless alien invasions. Defend both the ground and ceiling by shooting up hordes of aliens and building turrets, while navigating between arenas via gravity flipping and teleporters. Experience the Story Mode with quirky characters and two major story arcs, or test your skills in the even faster-paced Endless Mode.

"Megaton Rainfall" is a first-person superhero game with fast-paced aerial combat. As a nearly invulnerable superhuman, players must stop an alien invasion while saving cities from catastrophic destruction. The game features a unique "pentadimensional" scaling system, allowing players to seamlessly transition from street-level battles to interplanetary fights.

"Star Ruler 2" is a real-time grand strategy game that allows players to build and manage their own space empire. With fully destructible planets and a procedurally generated galaxy, players can engage in interstellar warfare, diplomacy, and research to expand their territory and ensure their species' survival. The game also features a multi-threaded simulation engine, enabling large-scale battles and complex political dynamics.

Avorion is a sandbox space simulation game that lets you build your own space ships and explore a procedurally generated universe. Mine resources, trade goods, and engage in space combat while navigating political alliances and factions. Experience a dynamic world that evolves based on your actions and interactions with other players.

Koya Rift is an action-packed platform shooter that is built around circular, adaptive gameplay that emphasizes replay value by challenging the player with procedural content tuned to their skill level. In Koya Rift, the player must enter a hostile planet and destroy an alien race so the planet can be colonized. Each game, the player is dropped off at the surface and must venture into procedurally…

From the creators of AI War: Fleet Command comes an all-new grand strategy title with turn-based tactical combat, set in a deep simulation of an entire solar system and its billions of inhabitants. You are the last of a murdered race, determined to unify or destroy the 8 others.

"Beat Invaders" is a rhythm-based shooter game where players control a spaceship, moving and shooting in sync with the beat of popular music tracks. The game offers a unique blend of rhythm and shooting mechanics, challenging players to dodge incoming bullets while attacking enemies on time. With a variety of songs, skins, and leaderboards, "Beat Invaders" provides an entertaining and immersive experience for music and gaming enthusiasts alike.