Game: LandFormer

The premise of Landformer is incredibly basic. Use a set of limited tools to either lower or raise the landscape to get all the land back to a flat position. It reminded me of the God game Populous or SimCity's terraforming aspects. While in that game flattening the land was just the beginning (since you then needed to build on it), here making the land flat is its own reward... and the only goal you'll be chasing.