Flowshot is, will be or might be, a shoot 'em up (shmup) with enemies and bosses that are all particle based. Their animation will be performed via particle movements, not sprite animations (even though if I had sprite animations it would be a bonus).

Similar Animation Examples:

• R-Type: The snakes in the 2nd and 7th level.
• Mushihimesama: The fluid and snake motions found it some of its bosses: https://youtu.be/0dbqSmSg71U?t=3m58s

Ideas:

• Perhaps all enemies are snakes.
• Perhaps they have head and body sections.
• Perhaps when a bode section is killed the snake splits up (or explodes).
• If the snake splits up, perhaps sections without heads will grow a head, perhaps a body section morphs into a head.

Perhaps, perhaps! :)