Killzone Mercenary

If you have a PSVita I really recommend getting this game. It's incredibly fun, even though I've been playing it for about a year I am still not bored of it. New maps are always coming out and updates are regular.

I hate that game because the botzone cost money

True, I got the game before the botzone had even come out though. I might buy the botzone because I don't have very many games on my PSVita that are actually fun to play offline.