Game is ok if you're just playing to pass time and not be competitive as there is A LOT of pvp content and a very high paywall. Otherwise, I would suggest only getting the game if you have deep pockets. Unless you are ready to spend hundreds of dollars each event, don't expect to get heroes above SR as the rates are ~0.01% to pull and many SSR and UR are not available from gacha and are $$ exclusive. As for the pity system that only happens during events, be prepared to do 800 pulls in 4 days.