World 2-1 (NSMB)

From the Super Mario Wiki

World 2-1 is the first desert world in New Super Mario Bros. The enemies are only Pokeys and 1 Spiny next to the second pokey. The first pokey seven segments (including head), and can be jumped over by the first set of ? Blocks. The second can be jumped over by a 4 block high block. The third is in a ditch and also guards the first Star Coin. Number 4 has a lift left of it where you can get over its 8 segments. There are then two Pokeys on lifts going down.

After them there is another pokey on a lift going up above quicksand, this guards the second star coin. Next there is a 9 segment Pokey (largest one in the level) that once jumped over you get the Midway Point. After that all the pokeys are on platforms and lifts. There is a mini pipe area for Mini Mario that has a coin maze with a 8-bit Mario and Luigi in the background. Then there is one more pokey and then a pipe leading to the flagpole (and one Pokey).

World 2 (NSMB)
2-1 | 2-2 | 2-3 | 2-4 | 2-Tower | 2-5 | 2-6 | 2-A | 2-Castle