The Best Moddable Games for PC Windows

The ultimate physics-based, sandbox battle simulator where you can create funny battles between all sorts of ragdoll creatures! You can also make your own monsters with the unit creator or even join the battles yourself in the first-person mode!

Design and build fortresses brick by brick to stand against endless hordes of Horrors in this real-time strategy game with resource management, siege defense, and exploration. Lead from the ramparts, push back the darkness, and hold fast against the creatures of the Mist.

Build and manage an international airport!

Command swarms of warriors at an unprecedented scale of warfare in this blend of RTS and base-building. Lead ant colonies against the many fearsome threats of the insect world, while building intricate nests, developing pheromone-based tactics, and evolving to meet growing dangers.

Build a soviet republic from an impoverished country into a rich industrial superpower in a city builder with intricate production chains and a fully simulated global economy. Manage the lives of your citizens from education to work and party loyalty to criminal activity.

Moddable physics football game where you can struggle through and break tackles for first downs, juggle tipped passes and make diving interceptions. You can also be the cinematographer and create your own videos using the replay system or go on quests with players as the coach in RPG Mode.

Create your own creatures to explore online worlds with friends and unlock new parts to upgrade your stats and abilities! Complete quests, fight to the death or just enjoy roleplaying — the social aspect makes it a truly unique multiplayer experience. What are you waiting for? Let's get creative!

Buy, sell, and trade organs in a strange and evolving universe. Dive into the quivering innards of alien capitalism in the sci-fi body horror market tycoon game you didn't know you needed.

In Stardeus, you are the immortal AI controlling a broken starship manned by drones and hibernating human survivors. Your mission is to repair the ship, save or exploit the human crew, and travel the stars in a procedurally generated universe. Balance oxygen, heat, and power to ensure long-term survival, grow crops, and mine planets to expand your facilities. Discover new ways to survive while dealing with alien face huggers, traders, or pirates. Live through endless possibilities and prepare for the worst. Survive and thrive in this beautifully complex simulation game.

The ultimate physics-based, sandbox battle simulator where you can create funny battles between all sorts of ragdoll creatures! You can also make your own monsters with the unit creator or even join the battles yourself in the first-person mode!