The game play of Puzzle Boy flash game (designed by Atlus) is simple, but the game is maddeningly addictive!
All you have to do is guide the little boy in a blue hat from one end of the screen to the goal by navigating through a series of obstacles. It's not as easy as it looks ...
Link - via Blue's News
I use Safari and what worked for me is first a mouseclick and than Returnbutton.
With other problematic Flashgames I use Ctrl-click (or right mousebutton if you have one) and choose Play or Forward in the menu.
Anyone else remember a game like this?