There are a lot of LD games to rate, these are my favorites:

Tiny Island Adventure

A little platformer with a nice difficulty.  Awesome gameplay and graphics.

Super Tiny Adventure

A Zelda like RPG with quests. Everything is so tiny, but awesome.

Tiny Wizard

A very cool shooter with a gandalf-like wizard.  You shall not pass!

Housefly

The story of a fly trying to get outside. Very cool concept and Fun!

Feel free to play my game too:

A Bathtub Story
A shooter game in a bathtub.