It's tough to know where Build Blocks is pitched - my gut feel is that it's aimed at small children, but then there's the whole teenage Minecraft phenomenon, so who knows, maybe an older sibling will fancy a go too? All I know is that it's creative, colourful and yes, very blocky. Screenshots and walkthrough below.

Sensibly, although the full app/game of Build Blocks is priced at £3, there's also a restricted free version too, Build Blocks Lite. You're limited to just the lowest 'resolution' landscape and there are no save facilities, but you (or rather your child) will get the idea quickly. Here's the title in action:

The developer's banner, showing err.... the sort of thing you can make(!)

The checkerboard grid revolves in three dimensions behind the menu, which is a fairly neat trick to pull off, if only at just under 6fps! ; (Right) there are five save slots for your blocky creations...

Should you have an older S60 5th Edition device, you can toggle off some of the 3D elements, to increase the fluidity; (right) starting to construct a first masterpiece...

The interface is super, spin it in all three dimensions with your finger, then tap to select a building point (the red cube frame cursor) and tap again to confirm the position....

After selecting an existing block, tapping and holding will vaporise it; (right) the full spectrum of block colours available....

Implemented in Java, you can buy the full app/game of Build Blocks here, with the free version here. Comments welcome - I'm really not too sure what to make of this!