TransPlan - TransPlan is a Strategy, Physics-based Puzzle and Single-player video game developed and published by Kittehface Software.
Excalidraw - Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.
Brain Dots - Brain Dots is a Brain Training, Physics-based, Puzzle video game by Translimit Inc.
Sketcharama - Draw a given word and let the other players guess your sketch.
Epic Draw: Physics Puzzle - Epic Draw: Physics Puzzle is a Physics-based, Puzzle and Education video game created and published by FreneticGamez.
Sketch Toy - A drawing application that lets you save and share replays of your work with friends.