Both games are very different from each other. I was longtime Rust player but i got bored afther 500+ hours. I was playing PUBG also but few weeks ago i started to play Fortnite Battle Royale and I can only say that the game is very very fun. (made 20 wins in only two weeks since i started to play the game :D ) For those of you that have doubts about the game I can only say to you guys just get your ass on the battlefield (it’s totally FREE) you are not going to regretting that you have downloaded the game.