Games like Plexus

Pilot your ship in the seamless open world made of space, planets, and more. Find new ships and equipment, find allies and beat all the enemies in this open source space shooter! Destination Sol is a free-to-play hardcore space arcade/RPG. You start as a pilot of a small fighter ship on the edge of a star system, and you're free to explore the game world, land on planets, fight with enemies, upgr…

"3089" is a Science Fiction Shooter game that offers both single-player and 2-player co-op modes. The game generates procedurally-generated, open-world terrain, enemies, weapons, items, and quests, providing a unique experience every time. Players can construct and customize their weapons and embark on unique quests made from individually generated task lists. However, be prepared for some grinding.

"Ziggurat is a single-player Fantasy Shooter with fast-paced combat, Rogue-lite elements, and RPG features. Explore randomly generated dungeons, defeat bosses, and level up to prove your worth as a sorcerer. With its beautiful graphics, hilarious moments, and high replayability, Ziggurat offers a wonderful atmosphere and a challenging experience for players."

"Interstellaria is a single-player Science Fiction Real Time Strategy game with a good plot and fabulous gameplay. Manage your crew, customize your ship, and navigate through a dangerous galaxy filled with hostile aliens and anomalies. Enjoy its pretty visuals, great soundtrack, and the humor, but be prepared for lots of grinding and some bugs."

"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.

"Sector Six" is a side-scrolling, sci-fi shooter with a unique silhouette aesthetic and procedural loot. As a space pilot, you must save the universe from the Eight Machines by building and customizing your spaceship's performance, appearance, and abilities. The modular difficulty system allows you to tailor the challenge for better rewards, making for a truly personalized experience. Master the ship combat, learn enemy patterns, and obliterate foes with lasers and missiles in this thrilling adventure.

"Trifox is a 3D action-adventure game featuring a talented fox seeking to reclaim his stolen TV remote. Choose from three classes – Warrior, Mage, Engineer – or mix abilities for a custom hero. Explore four danger-filled worlds, using magic, might, and gadgets to outfox foes and unlock 30 abilities."

In "Dreadborne Drifters," become a drifter, an inquisition agent traversing void portals to eradicate threats to humanity. This 2D platformer ARPG offers fast-paced gameplay with abundant loot, foes, and character-building opportunities. With three classes – Enforcer, Dronemancer, and Stalker – and a wide range of unique item perks, the game encourages various playstyles and strategic builds .

"CTHON is a sci-fi first-person shooter set in the 24th century, where evil has awakened in the Epsilon Eridani system. Pythos colony's moon harbors a terrifying secret, and by utilizing advanced alien technologies, you'll transform into a cybernetic killing machine to battle through an ever-changing labyrinth of aberrant creatures. Get your Steam key if you purchased from itch.io and prepare to face the greatest threat to mankind."

"GUNHEAD is a single-player Science Fiction Open World game, where players board and neutralize procedurally generated alien starships in a roguelite FPS experience. With over 50 weapon options and jetpack-enabled gameplay, plan a strategy to defeat each unique enemy ship's security systems, to the beat of a blood-pumping soundtrack."