dark gaia is easy. first you will be going against dark gaia in his first form. just swing the wii remote or nunchuck to hit him. only do both arms when he is about to grab you. after this you will have to save chip. so you have to run and hit all 3 eyes. lastly is perfect gaia. now get rings until it says "attack now" and it will show a wii remote icon. swing it and hit his eye. repeat this process and you will win.
Hit all seven eyes with Super Sonic with rings
Only in the end part where you have to defeat Dark Gaia in the Colossus.
you have to fight dark gaia
You have to defeat all bosses and restore the chaos emeralds.If you did that and its still broken its a glitch.
In Sonic Unleashed sonic is turned into a part of Dark Gaia (a giant ghost-like being that lives deep within the earth) and releases his inner "dark side" so to speak, at night.
Kill the dark gaia phanox
sonic unleashed perfect dark gaia
Beat the Final Boss, Dark Gaia after finishing Eggmanland
Dark Gaia ...do you even have the game? if you do this is a sad question
cause he was super and it was alot of work and power so he fainted
Chip learns his name which is Light Gaia. He helps sonic beat dark Gaia, they win(of course) and chip and sonic go separate ways
at the end of the game at the last boss lv you turn super and try to beat dark gaia