Anpan Stack is an engaging brain-training game designed to challenge children's cognitive skills. The game is developed by D CUBE K.K. and is available for free on the Android platform. Anpan Stack is an arcade game that tests children's problem-solving skills by challenging them to stack as many pieces of bread as they can in a basket.

The game features various types of bread, including anpan, "melon" shaped bread, and croissants. The objective of the game is to stack the bread in a way that maximizes the number of pieces that can fit into the basket. The game is designed to stimulate children's brains by encouraging them to use trial and error to find the best approach to stack the bread in the basket.