It's a twin-stick vertical scrolling Shooter hybrid with a cinematic flare:

An unrelenting onslaught of eye-popping visuals, ear bursting soundscapes and mind-melting action makes CYGNI the vanguard for the next generation of shoot-em ups. Outgunned and outmanned, plunge into a sky full of hell in a last-ditch war for survival. Upgrade your ship and take down colossal alien bosses in visceral combat. Do whatever it takes to survive!