it was that block. that invisible block in world 1-1 that contained the games first one up mushroom. that was was the block that told gamers that super mario bros was a special game. in 1985, we were used to games being very up front about there content, if there was an alien on the screen, you shoot it. if you were in a car, you drove it to the finish line. with super mario bros, it seemed like we were just supposed to walk to the right, break blocks, and jump on enemies. those preconceptions were shattered when we randomly jumped and accedentily hit that inisible block. suddenly, the game changed. we were no longer on a quest to save a princess, ( although that was still our primary goal ) we were now on a hunt to find every secret the game has to offer. how many invisible blocks were there? where are all the hidden coin blocks?  which pipes can i go in to find secret rooms? what would happen if i ran along the ceiling past the exit? super mario bros made many icons of todays mario stuff, mushrooms, goombas, coins, and lots more. i think, that this game is what made games what they are today. this is a very addicting game and i will play it untill i die.  so jump ( boooing!) into super mario bros today, and have fun forever.