Professor Sense Sizzler's Volcano Puzzle is hot, hot, hot - and when you solve the puzzle we guarantee that you will lava it! Place the lava inside the volcano (point upwards!)then place the puzzle on a flat surface. Can you work out how to remove the lava without touching the volcano?

Incredible math game with thousands of challenges and solutions.

A special design for a metal trick lock.The Houdini Under Lock has internal mechanism that needs to be figured out, so a simple use of the provided key will not do it! Puzzle Locks or Trick Locks cannot be opened like normal padlocks. A solution, or trick, needs to be found to crack the lock! Pit your wits against this puzzle in order to crack the lock. Puzzle locks have been made for many centuries and have foiled burglary attempts, kept secrets hidden away and helped escapologists baffle audiences. Over the years they have been some of the best and most popular puzzles ever invented.

The popular Brainstring has been turned inside out. Brainstring Revenge is just as knotty as the original, but features a movable ball with a 360° spin that will have users on the ropes. Twist, turn, stretch and slide the puzzle in all directions to unravel the tightly wound knot. Once the strings are completely separated, the puzzle is solved – no strings attached.