The Nintendo DS's touch screen is ideal for strategy games and, in particular, 'God games' in which the player uses a bird's-eye view to build a miniature civilisation.

The latest title in the Anno series allows you to rule over a fledgling empire in the 15th century.

The plot sees you, the son of an ageing king presiding over a kingdom in trouble, sent out to find new lands to supply hungry subjects back at home. After landing on a small island you must build houses for your small band of pioneers, and clear fields for them to work. They pay you taxes, allowing you to build new facilities: a chapel, for example, or a dairy farm.

Creating more municipal buildings will attract more wealthy citizens who, in turn, are able to pay more taxes. Over time your cluster of shacks with hardy owners that require only food can grow into a city of stone houses whose patrician inhabitants need food, milk, linen clothses, herbs, spices and much more, but who pay you a fortune in return.

One island alone can't provide all the raw materials for such a city, so you'll have to spread out, colonising other islands that are suitable for growing particular goods. To find enough islands you need to acquire maps, which can be gained by meeting certain requirements such as colonising a number of islands or building a city with so many hundred inhabitants.

Fail to provide any one type of goods and your citizens will stop paying taxes – fatal when you have a few plantations to support and you're trying to save up for a cathedral. Similarly, an island left undefended can be stormed and occupied by pirates. The game's combat system, which involves moving troops around between forts and ships, isn't as polished as the rest of the game, but it works.

The game includes a story mode, which serves to introduce the key concepts of the game at a decent pace, or you can go it alone and start building a colonial empire. It's not an action-packed rollercoaster of a game, and the combat sections are a little clumsy, but the rest is strangely absorbing: with your frontier empire always perched on a knife-edge, it's hard to save the game and step away.