Hungry Runtz were a part of the Hungry Wolves project.

Hungry Wolves as a collection is now part of White Sands, an interactive world built on the HYTOPIA platform. You can read more via this announcement: https://hungry-wolves.gitbook.io/whitepaper/

Each Hungry Wolves NFT now acts as an item bundle inside of White Sands, yielding interactive pets, vehicles and clubhouse access. The items you receive in-game depend on your wolf's tier trait.

This is the capstone utility of the Hungry Wolves collection and after a 2.5 year run, all other games and features have been sunset. This includes any utility provided to Hungry Runtz (a free mint provided to holders) which remain on the blockchain as NFT collectables.