Pitfall: The Mayan Adventure Cheats

Master code
Press L, Select, A, Select, R, A, L, Select at the title screen to enable cheat mode.

Level select
Enable the "Master code", then press L or R to select a level. Press Left to highlight "Start" to begin game play at the selected level.

All weapons
Enable the "Master code", then begin game play on any level. Hold Select and press B during game play to get 99 of each weapon.

Free movement
Enable the "Master code", then begin game play on any level. Hold Select and press the D-pad during game play to move in any direction. Lakamul Rain Forest level: Press A, L, A, R, A, L, Select(2), Start at the title screen.

Nine continues
Quickly and repeatedly press Start at the continue screen until the remaining number of continues increases to nine. Alternately, intentionally lose all your lives during game play in level 1, then press B(3) at the continue screen.

Lost City Of Copan
Extra life: In level 5 (Lost City Of Copan), find the location where there are two spider webs. Jump on the first and use the D-pad to land on the second one. Keep doing this until a golden figure appears in between the two. Jump out to get it and you will receive an extra life.