Some employees quoted in the report say the games are popular because they can help cut down on the tediousness and repetition of a nearly half-day warehouse shift.

The rewards earned by playing the workstation games can be turned in for virtual pets, including penguins and dinosaurs, according to The Information, although it’s not clear these pets have any value or whether they can be changed for anything.

the games themselves are not designed to reward employees with tangible, real-world benefits, the report says, and are instead ways for Amazon to encourage productivity as warehouse work becomes increasingly more tedious.