True or False?
"This sentence is false." Is the sentence true or false?
Hint: If the sentence is true, it is telling the truth that it is false. If it is false, it is lying that it is false so it is really telling the truth.
Solution: Unfortunately, there isn't really a good solution. Whether the sentence is true or false, a paradox is created. A similar question is, "If a man tries to fail and succeeds, which did he do?"
Games

LOST Swan Timer
Every 108 minutes, the button must be pushed.

The World's Easiest Game
Because the world's hardest game is way too hard.

Land the Boat
Don't hit the walls, or you'll sink!

Word Magnets
Just like word magnets you might find on a fridge, but online!
Puzzles
Connect the Colors
Connect the colors without crossing lines.
Toothpick Squares
Move two toothpicks to form exactly four squares instead of five.
Connect the Dots
Draw four straight lines, without lifting your imaginary pencil, that touch all nine dots in the grid.
Doorways
Travel through all the doorways exactly once.