Simple play, but game is not simple!

It's an amazing game! At first I thought it was a very boring game, but I didn't expect it to have many elements. I could have many weapons, maps, monsters and skills. There are different maps and monsters in different maps. I also could use different weapons to fight them, In addition, this game has no ads unless I need level up my skills. There is RPG element here, because the skills appear randomly. WOW, SMART & FUNNNNN!!!