Build a Building is a gentle, no-ads building-site game for children aged 4 to 7 — dreamed up, from the diggers to the ribbon, by a five-year-old. The tools and materials sit in a tray along the bottom of the screen, and your child puts up a brand-new building by choosing what the builders need next. There are thirty-three of them: a little house, a dog kennel, an igloo, a tree house, a thatched cottage, a windmill, a church, a bridge, a train station, a hospital, a castle, a stadium, a pyramid, a lighthouse, a cathedral, an observatory and more. Simple ones come first; the grand ones are earned.
The sixty-odd tools and materials are the real ones, drawn by hand and named: spade and pick, trowel and chisel, spirit level and tape measure, cement mixer, dumper, crane and scaffold; sand, gravel, cement, mortar, bricks, blocks, stone, slate, thatch, timber, joists, rafters, girders, glass, screws, hinges, plaster, insulation and guttering. And the jobs run in the order a real site runs them — groundworks, then the structure, then the roof, then the windows and doors, then the pipes and wires hidden inside the walls, then the plaster and the paint. The chimney stack is finished before the roof goes on. The guttering goes up while the scaffolding is still there. Thatch is laid straight onto the battens with nothing underneath it.
The trick is that building is tricky in two ways: you need the right tool and the right material. The hammer is no good without the nails; the plumber’s spanner needs pipes to connect; the electrician’s pliers need wires before the lights come on. Matching tool to material — and doing the jobs in a sensible order, because you can’t put the roof on before the walls are up — is early sequencing and matching thinking, wrapped up in diggers and cement mixers.