A living retro collection index — games, consoles, and manuals collectors have logged, how many own each one, and the market prices we have.
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Happy Feet is a game for Gameboy Advanced, released 2006 by Warner Bros. Interactive Entertainment. Collectors log it on RetroStronghold to track what it is worth. Current guide prices: $4.34 loose, $12.79 complete in box, $13.00 sealed.