Dig Dug – Digging Strike – Nintendo DS

Dig Dug - Digging Strike - Platform: Nintendo DS

Bonus levels:
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Get all dinosaur fossils in levels 1 through 12 to unlock the first
two bonus islands (13, 14). In those stages are the fossils that 
will allow you to reach the last level (15). 

Sound Test option:
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Drown the monster in level 12 to unlock the sound test option.