I spent some time today working on a design document, the fruits of which you can see here: Grocery Panic.doc
Don’t put the cans on top of the eggs.
Foodstuffs are falling into a paper bag from an ever-rotating conveyor belt of edible goods. Your job is to pack the bag without destroying anything. Certain items are fragile, and must be placed very carefully. The less empty space left, the better. Each bag will be more difficult to pack than the last!
The conveyor belt carries items before they are dropped into the pit. The conveyor belt starts off the right edge of the screen and ends at the top-center of the playing field.
At regular intervals determined by the conveyor belt speed, new items are added to the conveyor belt from the right side of the screen. They should move along the conveyor belt until they reach the end, where they stack up awaiting use by the player. Stacked items occasionally jiggle, to represent how agitated they are.
Whenever an item is placed, the next one is immediately picked off of the conveyor belt and placed at the very top-center top of the playing field, even if that item was not already at the end of the conveyor belt.
When the conveyor belt is filled with stacked items, they will blink red, and if another item is added, they all fall off into the pit, which will cause many things to be crushed by accidental poor placement. This may cost a player the game.