Mega Man

I know how everybody in their reccomended order lists they put fireman last.
But I always do him first. When you get into the boss
room don't worry about getting hitjust repeatedly fire with the mega buster.
Simple!

Super Mario Bros.

In SMB on level 1-1 at the beginning after the pipes there is
a hole and a bush get to the leftmost of the bush and jump
You have hit an invisible block that has spawned a 1-up

In SMB on level 1-2 at the end you can use the elevator
to jump over the ceiling. Run to the end and drop down
then go in a pipe to go to either world 2, 3, or 4.

In SMB on level 1-2 go to the end and go to the normal
exit pipe, but don't go in. Duck and jump backwards.
DO NOT HIT THE RIGHTMOST BLOCK. If you do it right you will
glitch through the wall. You will be in the 1-2 warp zone
(see above) go in the left pipe and you will end up in a
water level except that when you go in the exit pipe you
end up at the beginning again! this is called world -1.

The Legend of Zelda

100 top right-

go up right up up up up right right right right right up right right
(note: do not take any stairs or ladders)from the starting point and go to
the middle of the top wall and walk through it there will be a moblin that
gives you 100 rupees.

Armos 30-

go up right up up up up right right right right right down from starting point
remove armos on right and go under. The moblin will give you 30 rupees

tree 100 left-

go up left left left left left from starting point and burn the top
middle tree with the candle, the moblin will give you 100 rupees.

hole in big rock-

go up right up up up up right right right right from the starting point.
use your bombs on the bottom of that big rock. Go inside and pick from a
container heart or a second potion.

hole in rock wall

go right right right right from starting point use bombs on the top
wall to the left of the exit. Go inside and pick from a
container heart or a second potion.