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

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!

Word Magnets
Just like word magnets you might find on a fridge, but online!

Do Not Press
Whatever you do, you must not press the red button.
Puzzles
Toothpick Squares
Move two toothpicks to form exactly four squares instead of five.
Connect the Colors
Connect the colors without crossing lines.
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.