Medieval Moves is the perfect example of a great tech demo. If it had released with the PS Move at launch, it would have been a fun throwaway diversion with fantastic mechanics that shows off the peripheral's accessibility and accuracy to advantage. However, sadly, there's just not enough game here to warrant a full price purchase... which is where this sub-fiver price comes in handy. To be honest, I reckon it's probably worth a punt if you've already got a Move and want to show it off.
One of the better 'tech demos' of the Playstation Move, Medieval Moves has smooth, well-implemented mechanics that make good use of Sony's glowing, MoCon, sex toy wand. Unfortunately it's far too repetitive to recommend at full price, which is handy, as ShopTo are currently offering it for under seven quid. Worth a punt for the little ones, perhaps. Cheers Syzable @ HUKD.