If you're a budding megalomaniac then chances are you've enjoyed playing classic strategy games like Civilization and Populus in the past. Times have moved on though, and it's now possible to play God while you're sat on the train.

Revival is the latest creation from legendary developer Herocraft, charging you with the task of exploring seven planets and 27 continents with one main objective - to conquer them. There are two game modes to choose from. The wimpish 'Single' game, where you start with a home city already built for you, or the tougher 'Campaign' where you literally start with nothing and must build up schools, homes and protection for your community.

Along the way, you'll need to develop your citizens and build them from a bunch of simple archers to a bunch of tooled-up fighting machines. Of course, things are not that easy, and you'll constantly find yourself having to battle invading tribes hell-bent on destroying you. Thanks to some impressive AI, this is no mean feat, as your opponent's armies are aware of your strengths and weaknesses.

The graphics are small but wonderfully detailed and the soundtrack to the game sets the mood perfectly, changing style depending on whether you're building, fighting or training. I found the menu system a little confusing and at first you'll struggle to know exactly what you're doing as you try to suss out the controls though. As a result, I found Revival difficult to get into, yet with a bit of persistence you get the hang of the way it works, and start to relish the prospect of battle.

If you're a fan of God games and if you have the patience, Revival makes for a great download for your mobile phone.