Well what can I say about this game that you don't already know? Thats right nothing. I will tell you that its the game that jump started Nintendo and hooked every kid in the world. Not to mention that you can get this game at Funcoland for 9 cents! Thats right NINE CENTS! Well if you don't have this game then cash in a pop bottle and buy it :)
There are many, Many hidden goodies in this game I think thats the only reason people still play it :) From warps to infinate lives this game has it all.
Here's a trick that I use in castle areas where the ceilings are made of brick:You must have a powered up Mario do this. Find a brick ceiling and run back to the left of the screen. Make sure that you are as close to the edge of the screen as possible and start breaking the bricks above you by jumping. If you keep jumping and breaking in the same spot then eventually Mario will climb the wall until he is standing on top of the ceiling. At this point you can run to the end of the screen, avoiding all enemies :) ______________________________________________________

Super Mario Bros. Game Genie Codes
CODE/EFFECT . . .
AATOZA/Start players 1 & 2 with 1 life
IATOZA/Start players 1 & 2 with 6 lives
AATOZE/Start players 1 & 2 with 9 lives
VATOLE/Start player 1 with 8 lives and player 2 with 3 lives
SXIOPO/Infinite lives for both players
APZLGK/Super jump from a standing start only
TPZLTG/Super jump from running only
GPZUAG/Super jump from turbo running only
APZLGG/Mega-jump from a standing start only
APZLTG/Mega-jump from running only
GAZUAG/Mega-jump from turbo running only
YAZULG/Moon walk from a standing start
YAZUIG/Moon walk from a running start
YAZUYG/Moon walk from turbo running only
OZTLLX + AATLGZ + SZLIVO/Always stay big
YSAOPE + YEAOZA + PEAPYA/Start on World 2
YSAOPE + YEAOZA + ZEAPYA/Start on World 3
YSAOPE + YEAOZA + LEAPYA/Start on World 4
YSAOPE + YEAOZA + GEAPYA/Start on World 5
YSAOPE + YEAOZA + IEAPYA/Start on World 6
YSAOPE + YEAOZA + TEAPYA/Start on World 7
YSAOPE + YEAOZA + YEAPYA/Start on World 8