Recently, I got very addicted to a strategy mobile game that got officially released to the West called Girls' Frontline. The game is quite similar to Kancolle and maybe Azure Lane, but I find it to be much better. Also, it's very free to play friendly and you can actually get an even competitive playing field against whale players unlike most mobage games. Here's my gameplay.
Official Website: http://gf.sunborngame.com/