RPG Maker 2

When on test-play while making or editing a game, you can hold Circle to temporarily disable random encounters while moving.

Select the 'Edit Game' option at the main menu, then select 'File' then 'Load'. Your saved game files will appear. Press Circle, Up to highlight your memory card in the small box. Press X, then select the 'Sample' option. Select the 'Fu-Ma' sample game then enter Circle, X, Up, Left, Down, Right, Square, Triangle as a password. You can now edit the Fu-Ma demo game.

Select 'Play Game' at the title screen. On the next screen, select 'Fuma' to play a pre-made game from the developers of Dragon Warrior. It cannot be edited as it is password protected.