It never gets restored. Because most Sonic games are on-going so you can improve your scores and do the extra side-quests you might have missed, if the last continent was restored Chip wouldn't be with Sonic, Sonic wouldn't transform anymore, and Eggman Land wouldn't exist. It's a bit of a let-down not to be able to complete the game fully, but it's the only way it works.
What if it shows you the last continent being restored in a video?
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Complete Eggmanland and the Final Boss.I have and it hasn't.
Get to the last part of the last boss.
He is only playable on the last boss battle
Dark Gaia ...do you even have the game? if you do this is a sad question
i dont know you porobloay got to save it.