Ikea billionaire Ingvar Kamprad made his fortune helping the world stay frugal with cheap home furnishings. The same model is now being peddled at his bank, where customers get rewards for resisting luxury.

Ikano Bank is trying to lure savers by offering a $14,625 prize in the form of deposits to the winner of a computer game that punishes players who waste money on pricey goods. In “Flappy Saver,” a knockoff of the popular mobile game Flappy Bird, the player best able to navigate hurdles such as jewelery stores and shoe shops wins the highest score by protecting savings stored in a flying piggy bank.