Stairs, doors and elevators

A new building kit lets you go up: mezzanines, rooftop terraces, a meeting room above the lounge.

• Stairs. Pick how many steps, the rails and the style. Stairs and platforms are built on the same grid, so stairs with the same number of steps as a platform meet it exactly.
• Platforms. Decks you can stand on, with rails on whichever edges you choose. High ones stand on posts so people can walk underneath.
• Doors. Walk up to a door and press Enter. It opens away from you, and it can close by itself once the doorway is clear. There are twelve styles, from oak and office glass to shoji and spaceship. Saloon doors and sliding doors open as you walk through.
• Elevators. A cabin between the ground and a higher floor. Walk in and wait a moment to ride. Stand at the closed door at the other end to call it back. It comes as a solo cabin or one that fits four. The top door can open at the back, so you can stand it against a building and step out onto the roof.

It all comes in six looks: low-poly, loft, industrial, glass, grand and retro.