They Are Coming

They Are Coming — a hybrid game combining elements of roguelike, tower defense, and base building in a side-scrolling shooter format. In the "Defense" mode, you play as a survivor in a post-apocalyptic world, returning to the orphanage to protect your younger brothers and sisters from waves of zombies. Weapons and tools can be purchased from the administrator and used to defend the city.
In "Sandbox" mode, you gain access to unlocked items and can build defenses against zombies, experiment with tactics, and build strategies without the threat of defeat.
You'll like this game if — The mechanics are easy to master — Zombie shooting — Base building — Using firearms — Melee combat — Puppet physics — A creative sandbox mode
You won't like this game if — You lose everything upon defeat