Four children spent nearly £550 in three weeks buying player packs to play the Fifa football video game online on the family's Nintendo Switch console.
In Fifa, special players can be bought in packs, but the contents are only revealed after payment is completed.
The children's father, Thomas Carter, had bought them a single pack for around £8, and had not realised they had seen how he made the purchase.
"You pay £40 for the game, which is a lot of money in itself, but then the only way to get a great team is essentially by gambling," he said, referring to online play.
"They spent £550 and they still never got their favourite player, Lionel Messi."
There are two themes here; adults' digital literacy and how users (children) become gamblers to be successful players of games.