Great side scroller like salamander and gradius but can get repetitive after a while and the screen has way too many things going on at the same time, got this on PS1 and on my phone and tablet

My favourite side scroller shoot em up game ever, I have 95,% of all Japanese side scrollers ever made, played this in the arcades and had a crowd around me as I looped the game 3 times on a single 10p, got this on most consoles even ones I don't own, even on my phone I have the SNES and PS1 versions, also known as lifeforce this is my favourite game ever,