Games like Geometry Siege 2099 - Danmaku Boss Rush

"Crimzon Clover World EXplosion" is a shooting game with intense action and colorful explosions. Choose from several different ships and battle your way through hordes of enemies in multiple stages. With various difficulty modes and a scoring system that rewards skilled play, this game offers a challenging and satisfying experience for fans of shoot 'em ups.

"Danmaku Unlimited 2" is an indie shooting game with 60fps HD graphics, featuring 5 action-packed stages and epic bullet patterns. Battle numerous enemies, level up your Senko fighter, and enjoy a rocking soundtrack by Japanese indie group BLANKFIELD. With external controller support, 4 difficulty levels, and additional game modes, the game offers a challenging and immersive experience for shooting game fans.

Crimzon Clover: World Ignition is a top-down shooter from YOTSUBANE, AdventurePlanningService, featuring intense bullet hell action and customizable ships. Choose from four different modes, including Original, Unlimited, Time Attack, and Boost, and set your difficulty to either Arcade or Novice. The game features a unique multi-gauge system that allows you to upgrade your ship and control your playstyle.

"TechBeat Heart" is a fast-paced, combo-based shooter where players must fight against the Blackheart and its corrupt minions in frantic, randomized waves. With a variety of weapons to master and two different soundtracks to choose from, players must make combos to earn more time and aim for the highest online score. High replayability ensures a fresh challenge with every playthrough.

"Hitogata Happa" is a challenging vertical-scrolling shoot 'em up game, considered one of the hardest in its genre. Play as one of twelve characters, each with unique abilities, blasting through six intense stages filled with bullet insanity. Unlock special modes, secret features, and achieve 13 Steam achievements, while competing on online leaderboards. The game boasts old-school retro anime-style art and a new arranged sound.

A horizontal scrolling 2D shmup

"Devil Blade Reboot" is a 2021 remake of the 1996 Japanese indie shmup, now available in English. Experience an immersive pseudo-3D pixel art world with a frenzied soundtrack and evolving stages. Dodge, shoot, and destroy enemies for high scores, with closer shots granting higher multipliers. The Berserk System rewards risky play, making for a challenging and thrilling shoot 'em up experience.

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.

"RefleX: The ALLTYNEX Legacy" is the second chapter in the Japanese shooting game series, known for its carefully crafted play experiences and absorbing gameplay. In a futuristic world, players join the resistance organization Valkyness in their fight against the Global Unified Army, and later against an alien force, the Raiwat, in a battle that brings humanity to the brink of extinction. With splendid gameplay, pretty visuals, and amazing music, this single-player Science Fiction Shooter game promises destructive fun and an engaging storyline.

Horizon Shift is an explosive wave based, single screen shooter, with a ton of new ideas and platformer elements. Do what it takes to protect your horizon from the ever encroaching enemy attack! Use the unique risk reward multiplier system to maximise power-ups, build your bomb and destroy EVERYTHING!