A Letter Sequence
O T T F F S... What is the next letter?
Hint: Try to connect this to a sequence of numbers.
Solution: Each letter is the first letter of the basic numbers. One, Two, Three, Four, Five, Six...so the next letter is S for Seven.
Games

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

Hold the Button
Press and hold the button for a long as you can endure. You might even get on the leaderboard!

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

Reset the Sign
The longer you wait to reset the sign to zero, the higher your score. But don't wait too long, or someone else might reset it!
Puzzles
Toothpick Squares
Move two toothpicks to form exactly four squares instead of five.
Doorways
Travel through all the doorways exactly once.
Connect the Dots
Draw four straight lines, without lifting your imaginary pencil, that touch all nine dots in the grid.
Connect the Colors
Connect the colors without crossing lines.