Famicom Mini - Super Mario Bros - Platform: Gameboy Advance

Get fireworks at the end of a level: 
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In order to get fireworks to go off after you beat a level, 
simply finish the level when the last number in the Time is 
either a 1, 3, or 6. The number of fireworks you get depends 
on that number. So finish a level with 106 remaining, and 
you'll get 6 fireworks to explode. Plus, you get bonus points 
for each firework that goes off.