CIU still has game mechanic faults (and i’m not talking about the UI or stuff, i’m talking about the bosses, especially from older CI games).
The Giant Robotic Space Crab can trap you with its claws while throwing chicks or chickens (of course, killing you).
I suggest you keep zombie chickens and ninja chicks out of the Yolk Star.
Do not make Henley’s Comet come down while there are comets flying by, especially the lined comets, because it can come down to the hole and block it, and of course, you die.
You should make a way so that the UCO is easier to hit.
Some way to know when the Mysterious Ship shoots.
The Iron Chef sometimes swoops down all the way to the bottom of the screen.
P.S.: There is lack of information, too. We don’t know how Final Keys are earned, and i would suggest a UI extension to show how many coins/keys you have collected. (And coin keys and coins are two different things…)