Unless you already own these two games and don't care for the bonus content, this is a charming and challenging collection worth investing in. The real fun in the Scribblenauts Mega Pack is studying ...

Tesco’s largest pack of Calgon is a 30-tablet box for £10.50, which works out to 35p per tablet. Asda offers a slightly larger 45-pack for £15.98, making each tablet 35.5p.