All you can ask from a dominoes app is that it lets you play dominoes, and Domino! by Flyclops provides that nearly flawlessly. The gameplay is intuitively implemented for mobile devices, and the menu features work well enough, with the exception of extra games being created when you and a friend challenge each other at the same time. The game's free to play with ads; the ads can be obnoxious and repetitive, but removing ads is currently a 10$ one-time payment, which isn't much of an ask if you play this that often. It'd be nice if it was easier to differentiate between placeable locations for a domino when there are multiple options.