Super Mario Bros.

General Rules
Timing starts when the timer appears on 1-1.

Timing ends on the frame when Mario disappears after hitting the last switch.

Warpless
Warp zones may not be used.

Extra information
Any% TAS by HappyLee that finishes the game in 4:54.04 standard timing and 4:57.31 TAS timing.

Warpless TAS by HappyLee that finishes the game in 18:34.96 standard timing and in 18:38.22 TAS timing.

These make use of pressing left and right simultaneously -- which is banned under standard rules.