Clash Of Clans is the most addictive and played game in the world.
At beginning it is quite difficult to understand the game but as soon as you play it becomes easy and addictive . It’s not a very large file but under 100 mb.
Also it can be only played online but it doesn’t eat much data.You have to train army, build castle defence and attack the other enemy villages. You can also create your own clan and invite you best friends to join and play