Games like System Invaders

Steredenn: Binary Stars is an expanded version of the award-winning shoot 'em up game, Steredenn, offering infinite replayability through intense boss fights, randomly generated environments, and a vast arsenal of weapons. Play solo or with a friend in local co-op mode, choosing from 5 playable ships, each with unique abilities. The game provides quick, intense sessions featuring rock-hard boss battles that will keep you coming back for more.

Steredenn: Binary Stars is an award-winning rogue-like shoot'em up game with intense boss battles, randomly generated environments, and a vast arsenal of weapons. Experience quick, challenging sessions with upgrades and space events, available now on PC, Xbox One, PS4, Nintendo Switch, and iOS. Receive critical acclaim with user ratings around 90% on Steam and an average press rating of 8/10.

"Cyberhunt" is a single-player action game with old-school arcade aesthetics and procedurally generated levels. With 500 missions, multiple enemies, weapons, and power-ups, players can aim to reach the top of the Steam leaderboards or collect achievements. The game boasts awesome pixel art graphics, original tracks, and cloud support, offering around 2 hours of replayable gameplay.

1982 is a FREE retro inspired blasta-thon that will test your gaming skills to the max.

"Distant Space" is a 2D pixel art real-time strategy game set in the vastness of space. As the captain of a space fleet, players must manage resources, build and upgrade ships, and engage in tactical battles against alien threats. The game offers a procedurally generated galaxy, providing unique challenges and opportunities in each playthrough. Exploration, diplomacy, and combat are key elements of this engaging space exploration experience.

A chaotic co-op musical bullet-hell based on three simple things: avoid Shapes, move to the kick-ass Beats, and die, repeatedly.

"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.

Riddled Corpses is a challenging 8/16-bit arcade-style game with hordes of pixel art zombies and monsters across 6 unique stages. Choose from 6 playable characters, each with their own shooting style and special ability, as you battle through levels filled with chaotic, fast-paced action. New characters, enemies, and special abilities have been added to the PC version for even more variety and replayability.

"Chippy" is a twin-stick bullet-hell shooter with exceptional mechanics, fabulous graphics, and spectacular music. Play solo or with a friend in local co-op, challenging 14 bosses in a race for the fastest time. With power-ups, leaderboards, replays, and Workshop support, this game offers a variety of ways to experience its pixel-by-pixel destruction system. New Easy and Nightmare modes provide additional difficulties to master.

"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.