Make a 10-second gameplay clip of a 3D platformer game that does not exist, built and rendered entirely in Blender. Think of the bright, toy-like worlds of late-90s mascot platformers: floating grass islands, a castle on a hill, spinning coins, item blocks, patrolling enemies. Design an original hero of your own (not an existing character), rig it and animate it: run, triple jump, stomp an enemy, grab coins, with a third-person camera following behind. Add a game HUD (coins, lives, stars). Model everything by hand in Blender: no image models, no downloaded assets. Render 1280x720 at 24 fps as film.mp4 and save the .blend. It should look like a real game the moment it starts.