The Incredible Platformer
Hurry! You're running but you can't jump! Oh no, what can you do? You can see the exit, but you keep on falling down and pushing keys on your keyboard doesn't work, neither does clicking you mouse. But wait, what is that shiny thing? It looks like a coin and if you press it, the level gets reset. What a weird object. What if you try dragging it? That works! Now... what if we put it in the path of that running fellow... He suddenly jumps! That's it! That's what you need to do to solve this puzzle.
The Incredible Platformer is a mouse-only game, but with a little twist. You don't actually use your mouse to control the behaviour of our little protagonist, but we use is to drag coins in strategic places so our little hero will jump over gaps so he can enter the exit of the level. While you're dragging, time slows down, which gives you a little bit more time to pinpoint the exact spot of the coins. Accompanied but a repetitive tune he defies large chasms, gaps and holes to land on other platform so he can continue his way.
Later levels, as with most single screen level games, get pretty challenging. You really need to figure out where to place the objects so the protagonist does exactly what you want him to do, and that will take time and willpower. Overall it's a cute little timewaster that will keep you busy for a while.