TT going ham
This isn't just another Android game. This is a HTML5 game which uses GPG.js (https://github.com/Fleker/GooglePlayGames.js), an open source library that gives native support to web games. The core game is all Javascript. The library intelligently handles the backend and chooses the method of sign-in, achievement unlocking, etc. The game can be updated through updating your website -- no store management is required beyond a simple listing.
The game is a simple version of virtual table tennis. Three points and you win. Multiplayer support is so-so. Speeds and paddle position are responsive, so you get a decent experience on any device. It supports phones, tablets, and TVs.
The game is not meant to be an impressive game by any means. The visuals are sub-par, yes, and the gameplay is mediocre at best. It's just a tech demo.