The Mayan puzzle box – Impossible puzzles – Benno de Grote
Cubicdissection.com - Portal is Dee Dixon's newest Sequential Discovery Puzzle Box. Dee's earlier works like Where's my Hammer and Space Case have been very well received by the puzzle community. Portal carries
PuzzleMad: Not a box! A sequential discovery puzzle with a cavity!
Pandora's Box Sequential Discovery Puzzle Box By Jürgen Reiche Difficulty 9/10 | eBay
Cluebox 3: Nautilus - An Escape Room in a Puzzle Box - Art of Play
the Ultimate Guide : Sequential Discovery! - Puzzle Wanderer
Button Box Sequential Discovery Puzzle by Mowens
Lock Box Sequential Discovery by Eric Fuller - Puzzle Wanderer