A few fine smartphone games app

All the app I recommend here is free, available on both Adroid and iOS, and you can play it offline. So here is my recommendation.

1. Tiny Troopers 2
This game took the player to control a squad of trooper through several mission. This game have a good graphic, simple gameplay, and doesn't take much space in the memory. It's also run smoothly in several smartphones.

2. Brothers In Arms 2 - Global Front
Brothers In Arms 2 First Person Shooter game taking the scene of a world war 2 era on smartphone developed by Gameloft. Like most of good FPS on smartphones it also have a gyroscopic vision. With an excellent graphic, and it is not full of ads. It took about 800 MB space of memory.

3. Great Little War Game
Great Liitle War Game is a turn based strategy game where the player controls Infantry, Artillery, Transport, and Tanks to finish the mission's objective. There was no money or gold system outside the battle. So it was pure strategy of the player to secure the objective of the mission by maintaining barracks and resources generated by oil rig in battle. Unlike most game free game on smartphone this game doesn't offer purchase in game, it's also not full of ads. You can upgrade this game for several price for more mission, unit, and multiplayer maps. And it took very little space in the memory.

4. Royal Revolt
Royal revolt is strategy game with gameplay of reversed tower defense where the both player and the enemy also able to spawn troops to attack each other. It has a simple gameplay, amazing graphic and doesn't take much space in memory.