Capcom have put together a web-based demo of their highly rated puzzle game, Zak and Wiki: Quest for Barbaros' Treasure. If you click on the 'Gameplay' tab, you'll find a demo level that involves faffing about with keys, water and ice. We're not going to tell you how to solve the level, purely because the joy of these things comes from working out the puzzle yourself - any scandalous rumours that we couldn't work it out and eventually quit out of the whole thing with significantly lowered self-esteem are simply not true.