Glasses can be stacked
Glasses are put in a wooden cabinet and taken from the cabinet.
The playing field is a grid inside the cabinet:
The game is played in two modes, putting and taking glasses.
Put glasses in the cabinet until the glass counts are zero,
then take all the glasses from the cabinet.
When putting glasses you are presented with the type of glass to put in the cabinet, displayed in the top-left
You put the glass in the cabinet starting from the back and adding more glasses towards the front
You put the glass in an empty spot or stack it on another glass
To put a glass tap the spot in the cabinet grid where you want it and it will appear or stack
You cannot put or stack a glass behind another glass, you have to play from back to front
When taking glasses you are presented with the type of glass to take displayed in the top-left
You take that type of glass from the cabinet, either a glass itself or a glass at the top of a stack
To take a glass tap on it, and if it's a stack it unstacks otherwise it disappears
You cannot take a glass behind another glass, you have to play from front to back
If the glass to take is the red glass, you can take any glass you like
At each level, more glasses are already in the cabinet,
and you are asked to put a wider variety of glass combinations,
A little secret, a reward for reading this far: try tapping the Level number.