The game in single player has 23 Phases to get through.
No bloody idea on any form of multiplayer as we done have a GBA link cable support in any TASing emulator for GBA yet.
The ROM is the American version of Super Mario Advance (Super Mario Bros. 2 + Mario Bros.).
#40749942477359099 - Mario Bros. Euro/Aus version Phases 1-3
The Official PAL version is a shit version of the NTSC version with the same amount of Phases. Classic Serie doesn't have any through the floor glitch and that Kaettekita is a pile of shit that's not faithful to the Arcade like Classic Serie is. If you bring up this TAS again as a comparison between NTSC and Classic Serie (EVEN THOUGH THEY'RE COMPLETELY DIFFERENT IN EVERY SINGLE WAY) you better bring up Donkey Kong: Original Edition next time.