Space Invaders Extreme – Nintendo DS

Space Invaders Extreme - Platform: Nintendo DS

Endless mode:
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Successfully complete all stages in Arcade mode to unlock Endless mode. 
This mode allows you to play each stage in order without Bosses.

Extra mode:
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Successfully complete Arcade mode to unlock Extra mode.

Stage mode:
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Successfully complete the first stage to unlock Stage mode. This mode allows
you to replay already completed stages.