Game developer Rake in Grass has just released Archibald's Adventures Lite [App Store], a free 32-level version of the full, 114-level paid game.
In Archibald's Adventures, the player controls Archibald, a boy on a skateboard. Soon, he trades up to a robotic vehicle that can climb along walls and ceilings, and ultimately ends up with a flying jet-powered craft. He can also summon a floating bubble and send it to do his bidding (transporting objects, pressing remote buttons, etc.).