Facebook is testing playable game ads so you can try before you buy
 

If you've played any free-to-play mobile games recently, you'll be familiar with the playable ads that let you try a little bit of gameplay while waiting for the advertisement to time out. Google Play has been trying out its own "try before you buy"...

https://www.engadget.com/2018/04/18/...ble-ads-games/