You can choose between a classic and modern game. While the classic
game simulates the egg on the spoon (more or less) the goal of the
modern game is to stay below a certain maximum acceleration.
For the classic game you can choose whether you have to hold the device level (gravity) and/or calm (acceleration) in order to keep the egg on the 'spoon'.
For both game types the difficulty level can be chosen as well which adapts the sensitivity to the applied forces.