Infinite Apocalypse: My Legion Has a Few Billion People

Not a fast-paced novel [System] [Infinite Flow] [Army] [Apocalypse] Su Ye obtains an Army System. After developing it on a savage planet for 30 days, he goes on to save one parallel world after another, each beset by a different apocalypse. Zombie worlds, alien invasions, AI rebellions, mutated insects, mutated plants, paranormal invasions, game invasions... Once the army arrives, every problem gets solved.