Perennially popular with developers, war games, particularly the easily defined good guy/bad guy dynamic of the second world war, are as numerous on a small scale as their bigger console cousins and often as rewarding. Battle Supremacy (Atypical Games, iOS, £2.99) is the follow-up to the more complex aerial sim Sky Gamblers – but the action has moved down, and the level of complexity has gone in the same direction, as you take control of tanks, jeeps and boats to bash the Bosche. The two joysticks – for motion and turret – are sometimes fiddly, especially on the iPhone, but it's smooth enough, and landing a shot on top of the enemy from distance is satisfying.

For those who enjoy a spot of alternative history, Panzer Corps (Slitherine, iPad, £13.99) allows you to lead the Nazis to victory – and offers a more in-depth experience. It's a full port of the PC title, a complex military sim, which requires expert force management to succeed. Send your infantry on to exposed rural landscapes and they'll be slaughtered, so tanks are better suited, but without the Luftwaffe to back them up, and the infantry to do the mopping up, it will all be in vain. With hundreds of different troop types, it's a little daunting, but it's nonetheless incredibly rewarding when a carefully constructed battle plan sends the allied forces reeling.