This is one of these hacks that give SMB1 a Atari 2600 look, but uses Atari characters instead of Mario characters. Mario is replaced by Indiana Jones (while small) and by Pitfall Harry (while big or while having fire power). Toad is Mario from Mario Bros. and Peach is E.T. the Extraterrestrial.
Super Mario Bros. (World).nes
CRC32: 3337EC46
MD5: 811B027EAF99C2DEF7B933C5208636DE
SHA-1: EA343F4E445A9050D4B4FBAC2C77D0693B1D0922