https://wccftech.com/todays-list-of-paid-apps-and-games-that-are-on-sale-at-the-play-store-including-monument-valley-and-more/

An addendum to the "things that are on sale" theme everywhere, here are some games and apps you might enjoy. The titles are on sale for a limited time only and can become full-price at any moment. If you can't see a strikethrough on the price next to the “install” button, it isn’t on sale anymore. Once you download an app/game, it’s yours to keep even after the promotion ends, and you can reinstall it on any other device linked with the same Google Play ID.

Today’s List of Paid Apps and Games That Are on Sale at the Play Store Including Lara Croft GO and More