A 3D physics-based sandbox made and published by Axolot Games. It currently has three
game modes: Creative, Survival, and Challenge. Creative mode includes blueprints to save,
load, and share your creations. You have unlimited parts but the
world is not infinite. Challenge mode is where you can build or play race courses, puzzles, (and even math tests). It is built in with a timer so
people can try to speedrun your challenges. Survival mode is the most recent and beautiful mode. You fight robots, build cars to travel between factories, build trucks to move your items between areas, build rockets to fool around, build farms, and build bases around your farms to protect them from robots. Its Minecraft on steroids, and it only costs $20 on
Steam.