Your bank account just took a direct hit from Sonic the Hedgehog. A new study reveals that the average American spends a shocking 4.5 hours per week chasing digital collectibles in mobile games, with the most popular titles—including the latest Sonic the Hedgehog game—driving folks to drain their wallets on in-app purchases for virtual rings and power-ups. That’s over 230 hours a year, costing you up to 0 in lost productivity and snack runs alone, while game companies cash in on your nostalgia. Experts warn this habit is worse than a daily latte habit, so before you tap that “buy” button for another Sonic speed boost, check your receipts. Your grocery budget will thank you.