Graceful Danmaku Festival
Buy
Could be interesting
Shoot 'em up/Bullet Hell game for mobile platforms (iOS/Android) by Tanoshimasu Co. Ltd
When it comes to vertical shmups, not everything is black and white. There's also some red!
Illvelo, also named Illmatic Envelope, is a vertical shmup initially released for the NAOMI arcade system by MileStone Inc. in 2008. It's mostly noticeable for its trippy level backgrounds, bizarre sound effects and wacky enemy visual designs.
Strengthen your character and defeat enemies! It is a bullet hell shmup that combines casualness and authenticity.
KYM-tan Shoots Things is a shooter game, based on the website personification of the internet humor site KnowYourMeme.
Bullet-hell shooter
Indie bullet hell/STG game developed by Ichigo-Citron, based on the anime/manga series Rozen Maiden.
1NVADER is a one or two-player game played with one button, one laser, one 1NVADER, and one life. Play co-operatively, or competitively with a friend, or face the 1NVADER alone.
Experience heart-pumping arcade shooter action. Each combat presents a new challenge as you adapt to a different ship with a unique way to play. Dodge an onslaught of bullets, blast through enemies, and shapeshift your way to victory.