Super Mario Advance
99 LIVESGo to World 3-3. Climb the ladder then jump over the spark enemies to the door over on the ledge. Find the red grass patches; the last one is a shell. Pick it up. Go back to the bottom of the area, and then toss the shell into the doorway. Stand on the ledge and wait. After the shell defeats enough Shy Guys to earn 1,600 points, you'll start earning extra lives. You can easily, and quickly, earn up to 99 lives.
FREE HEARTS
If you're ever in need of hearts, look for one of those giant Shy-Guy enemies. Jump on it, pick it up, then throw it on the ground again. A heart will come out for you to collect. You can do this an infinite number of times to the same giant Shy-Guy, too.
EXTRA LIVES
To gain an extra life in any level, collect all 5 Red Coins scattered throughout each level.
YOSHI CHALLENGE
After defeating Wart in World 7-2, you unlock a special Yoshi Challenge game on that file. It allows you to replay any stage in search of two Yoshi Eggs. Unfortunately, it gives no description of the kinds of areas the eggs could be hidden. The eggs are hidden in Subspace, but the searching for the egg is the challenge. Also, if you lose a life, you lose all of your eggs as well.
submitted by Hub member: egg
