Twin Pictures

Twin Pictures is a classic spot-the-difference game, drawn entirely in code. Two copies of the same busy scene sit side by side — a harbour with sailboats and a lighthouse, a farmyard full of cows and chickens, a city street, a cosy living room, a playground, a space station, a jungle, a bakery, a ski slope and an aquarium — and a few things are not quite the same. A boat has changed colour, a cow has lost a spot, the sun has nodded off, a crate has quietly gone missing. Tap the change in either picture and it is circled in both.

Every difference is built into the scene on purpose and measured before you ever see it, so none of them is a one-shade colour shift or a stray pixel: each one is a visible change to a real object. The sixty levels start with five big, friendly differences and slowly get busier, with smaller changes and, towards the end, seven to find. Stars come from your time and the hints you used. A wrong tap adds five seconds, and three hints per round are there when your brain needs a nudge.

The daily picture is the same for everyone and changes at midnight. Relaxed mode takes the clock away completely and keeps an endless supply of fresh scenes coming, for when you just want to relax and look. Zoom in with a pinch on a phone, the mouse wheel or the + and − buttons, and drag to look around. Your stars and best times are saved on your own device.