It might be a damp, grey Newcastle morning, but I m giggling with delight, uncharacteristically, perched on the sofa in the corner of Ubisoft Reflections offices. Grow Up is entirely to blame. The sequel to Grow Home, one of last year s most endearing games and the product of experiments with procedural animation, is a gleeful, lighthearted adventure with a gorgeous globe to explore and a wobbly robot to explore it with.