Isekai: I Have A Gacha System!

Wang Xi was a renowned Product Manager for a card game, as well as a veteran playboy. Because he was juggling ten different girlfriends at once, one of them slammed on the gas pedal and sent him straight to another world. Walking through this alternate world plagued by apocalyptic disasters and rampant monsters, his only hope of surviving the cataclysms of the Main World is to capture the Ability Cards of various legendary figures and mythical creatures. “Now, it's showtime!!!” — Description from novelcodex.org