The apocalypse is coming, but thankfully I have a harem of paper dolls.

"If the apocalypse comes and your wallpaper character appears beside you to protect you, how long can you last?" When Luo Jiajun, whose computer wallpaper was a picture of dozens of female game characters in bikinis, saw this post on Tieba, his expression gradually became comical.
Soon after, a post-apocalyptic game that suddenly appeared in Luo Jiajun's mind gave him the right to answer this question based on his personal experience.
[Hyperdimensional Apocalypse Game Installation Complete! With each game update, a different apocalyptic theme will be available!]
Please choose one of the following four initial post-apocalyptic scenarios: 1. The Walking Dead, 2. Natural Disaster, 3. Plant Mutation, 4. Omnic Crisis.
[...Initial apocalyptic version selected! Synchronizing with reality! Please summon your teammates as soon as possible to prepare for the impending crisis!]
[Summon teammates]
[Achina Dimitrescu (Eight-Foot Lady), Class Synergy: Aberrant, Faction Synergy: Bio-monster]
[Iron Witch Annerose, Class Synergy: Swordsman, Faction Synergy: Witch]
[Ikawa Asagi, Class Synergy: Swordsman, Ninja, Faction Synergy: Anti-Demon Ninja]
[Mercy Ziegler, Class Synergy: Scientist, Healer, Faction Synergy: Overwatch]
……
洛家俊：“末日版本不断更新强度越来越高是吧？各种灾难狂轰滥炸是吧？都等着！等我凑齐9魔女9剑士8对魔忍8守望先锋8格斗家8骑士5猎魔人5亡灵法师4潜伏者4治疗者3科学家……的阵容！就算亚空间邪神打过来也得给爷跪下唱征服！”