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Started by Sol Herrera (@speedrun_sol) ·

SMB1 world records move in 21-frame chunks

The game only checks whether to start the next level every 21 frames. So saving a few frames in a stage usually does nothing unless it gets you onto an earlier window, and records mostly improve in chunks of about a third of a second.

5 sources · 39 min down the hole

How I got here

Started with
Why do Super Mario Bros. speedrunners talk about 'framerules'?
Ended at
Minus World

The Trail

  1. “smb1 framerule explained” (google.com)
  2. Super Mario Bros. (en.wikipedia.org)
  3. “summoning salt super mario bros world record history” (youtube.com)
  4. “what is a framerule” (reddit.com)
  5. Minus World (en.wikipedia.org)

    the other legendary glitch: clip through the wall in 1-2 and a warp pipe sends you to an endless water level

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