tl;dr: save your money and your time, avoid this game
A new round starts off with a tap anywhere on the screen (that isn’t the bottom row of buttons or ads), and throughout the game you tap the screen anywhere to place blocks. If you lose, every so often a full screen ad will just appear, often as you’re still reacting to the game and the loss isn’t immediately available, causing you to tap a full screen ad and start loading some App Store page prompting you to download the app.
This method of ad displaying is meant to do nothing more than cause inconvenience for the layer that feels they made a mistake while driving up ad clicks for the developer.
Ridiculous.
On top of this, there’s an ad on the bottom of the game at all times—less intrusive, maybe annoying enough to spend money on this little-more-than-a-time-sink app, but coupled with the highly intrusive, full screen ad, I’d recommend never installing in the first place.
The advertised AR just doesn’t work well, either. It took forever to register a surface and load in great lighting on a surface I used other apps, then froze and crash and won’t work any other time.