We've been making more puzzles with irregular borders - it's a lot more challenging and fun when you can't start just putting the edge together. Below is the irregular mushroom-y border on our Alice and the Caterpillar puzzle.
Other puzzles with irregular edges: Van Gogh Seascape, Merriam Tailspin, Rosso Angelo, Captive Unicorn, and the Four Color Map puzzle.
A couple other new puzzles have regular edges with some "surprises" - we'll let you see for yourself - Rousseau's Dream and the Juan Gris Open Window.