easy. this game terrible not safe for free to play player even your'e grinding level. it have log in issue in many ways. ridiculous high price even the minimum topup. i think this game not as survival game but as fantasy survival rather than sci-fi survival that make not sense. long wait to enter the game even 20 minute or more. not even chance for new player like nancy city. to many bug like stuck under the rock until you die. to many issue from other player. please fix this game.