Counting Sheep: Brain Training is free on Google Play

Counting Sheep: Brain Training is a casual Android game built around one simple idea: keeping track of sheep. You count them as they enter the pen, climb down from trucks and move between cottages, and check whether they follow the signpost. It normally costs $1.99 but is free on Google Play right now.

It's for players who want a light cognitive workout that's still fun. The game has no ads and no subscriptions.

If you download it during the promotion, it stays linked to your Google account. You can reinstall it later, even after the price goes back up. No end date has been announced, so claim it soon.