if u do portal to boss world heave its warning(u can never return)
Boss world is quite imposable even if u have 30 upgrades and the strongest ship.Though if u do goto boss world u goto lvl 107 and finish the game(skip demon lord genu) i would not recommend it.... although u do get approx 2.000.000gold per lvl IF u win (5%/100% chance u will win)
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