God-Level Game Developer System: I Brought In-Game Items To Real World

After his death, Weiss S. Albus woke up under an unfamiliar ceiling. What came after a successful transmigration was none other than the memories of the previous owner's body.Transmigrating into the modern world Blue Star, Weiss was confronted with a system screen in front of him.[Weiss, two months from now, the invasion from another world will destroy Blue Star. You need to prepare and let the entire human race have the power to defeat those invaders! Become a God-Level Game Developer!]Hearing the sweet yet resolute voice from his system spirit "Alice", Weiss immediately made countermeasures!Invasion from another world? Create the Idle Tower Defense Game and make the defense of Blue Star invulnerable! Those flying lizards (dragons?) were shot down from the sky by a homing meteor turret!Lack of experience in dealing with a wave of monsters? Zombie Survival Online has been developed! Waves of evolved zombies, the hands of the military were numbed after playing the game!The humans need summoned monsters to fight alongside them for support? The Pocket Monster Game was created just for that purpose! Armed with dimensional pocket balls, the players gazed at the monsters and shouted "Gotta imprison and enslave them all!"As if that wasn't enough, mages and warriors from another world invaded Blue Star! Weiss immediately developed Fantasia Online and let those aliens get a taste of their own medicine!After awakening the God-Level Game Developer System, creating game worlds that was no different from reality itself became the norm for Weiss Albus!"Invasion from another world? Let the human race treat this as nothing but a game! I, the God-Level Game Developer, approve!"Life is a game, but a game within a game? Only the God-Level Game Developer Weiss S. Albus can develop it!