AdventureCraft has two different gamemodes, which can be switched by pressing "F4", these modes are:

Adventure Mode

This is the gameplay mode, where the player can play the map, fight mobs, trigger events like bosses, music & much more, and of course play through the storyline of the respective map.

Debug Mode

This mode is for the map creator. They can use all the map creation and editing functions, including placing and viewing Trigger Blocks & Triggerable Blocks, setting diverse scripts, and typing in commands.

A list of all useful items can be found here.