Games like BioGun

"MindSeize is a single-player Metroidvania shooter game with stunning 16-bit pixel graphics, set in a sci-fi universe where you play as a crippled private investigator seeking to rescue your daughter's mind from a dangerous criminal organization. Experience smooth and fast-paced action with a phenomenal soundtrack while exploring four unique planets filled with dangers and secrets. However, be aware of bugs that can affect the gameplay experience."

Guns of Fury is a retro-inspired action platformer that combines the run & gun and Metroidvania genres. Explore a vast interconnected world, gain new abilities and weapons, battle epic bosses and stop the plans of an evil corporation before it’s too late!

Voidwrought is a 2D action-platformer set in a hand-drawn world of cosmic horrors. Explore the thawing ruins of the First Civilisation and strike down the gods that dwell there. Grow your powers, uncover ancient artifacts, and expand your shrine amid the wreckage.

"Haak is a single-player Platformer game with Metroidvania elements, set in a post-apocalyptic world with unique pixel graphics. As Haak, a traveler from the north, explore the land using your hook, dash, and charged slash to survive against dangerous mutants and dark forces. The hand-drawn retro-futuristic pixel world and intriguing story will keep you engaged through compelling gameplay and phenomenal music."

"Ghost Song" is a metroidvania-style game set in a moody, atmospheric sci-fi world. As the stranger, a mysterious pilot with a forgotten past, players explore an abandoned space station and battle against alien creatures. The game features various abilities and upgrades to discover, non-linear exploration, and a hauntingly beautiful soundtrack.

In Vernal Edge, a Metroidvania-style game, play as Vernal, a young woman seeking her father in a mysterious kingdom of floating islands ruled by the Church of Aloe. Master Vernal's combos and explore diverse pixel art environments filled with secrets and powerful upgrades. Dynamic combat and engaging narrative await in this action-packed adventure.

In Phoenotopia: Awakening, players assume the role of Gail, a young girl tasked with protecting her village after a mysterious spaceship crash lands. Explore a vast open world, battle enemies, and solve puzzles in this action-adventure game with Metroidvania elements. Discover the truth behind the invading entities and restore peace to the world.

In "Cookie Cutter," play as Cherry, a vengeful android on a mission to rescue her creator and loved one from a twisted villain. Explore the massive Megastructure, battling INFONET's armies in this 2D platformer filled with irreverent humor, graphic violence, and mature themes. Prepare for an unforgettable, action-packed experience as you seek retribution and uncover the truth behind the decaying world.

A soulslike adventure set in a crumbling underwater world.

"Catmaze" is a single-player fantasy platformer game with a stellar story and good gameplay, set in a beautiful world inspired by Slavic mythology. As the cat Bayn, players assist the sorceress Alesta in uncovering secrets of magical forests and battling mythical beasts, with the help of unique summoned creatures. Despite amazing visuals and soundtrack, the game is currently full of bugs.