Get flipping confusing colour combinations in Tesserae HD

It's the sort of game that has me scratching my head, but hopefully over time, even I might be able to get the hang of Tesserae, which has just been upgraded from iPhone with a standalone HD version.

Labelled a colour combination and reduction game, you have to remove as many tiles as you can from the board.

You do this by flipping tiles over each other, removing the tile you jump over, and combining the colour of flipped tile with the colour of the one it lands on.

The easy mode starts you off with tiles in the three primary colours - red, yellow and blue - these tiles can flip over any other primary coloured tile, removing it from the board.

When the tiles land on each other however, their colours mix, producing green, orange and purple. All combined, three primary colours create a grey tile. Hence the game has you carefully flipping tiles over each other, removing colours and tiles as you go.

As you'd expect, the iPad version provides for a large play field with 9 x 14 board, six different board shapes and three levels of tile layout. There's also a good help section, while your score is handled by OpenFeint in terms of achievements and leaderboards.

Tesserae HD is available now, priced $1.99, €1.59 or £1.19.