Been playing the 1 life only game, trying to go for distance (personal quest to see how how quickly I can improve and how far I can get), playing all levels, not entering any of the bonus games or mushroom houses, using only those power-ups which I can find within the levels. Okay, all my scores so far:
SMB3-score at 1st death 303730 World 3-2
Died by Cheep-Cheep, talk about a lame death:
SMB3-score at 1st death 208600 World 2 desert
Burned to death by the Angry Sun:
SMB3-score at 1st death 416500 World 3 fortress2
Killed by Roto-Disc (damn slow ass swimming):
SMB3-score at 1st death 169340 World 2-2
Lost my footing, fell into that there pit, really bad way to go out, not even anything dangerous around:
SMB3-score at 1st death 330440 World 3-3
Friggin' Cheep-Cheep, such pest they are:
SMB3-score at 1st death 393340 World 3-6
Slipped off the edge going for the 1up which I didn't need being this is a 1 life only game:
SMB3-score at 1st death 607880 World 4 airship
Airship flies too slow, I got impatient, it was my undoing, burned to crisp by the flamejet on the right: