www.bekonscot.com/virtual_village/ is great fun, and a welcome alternative to MyWorld Make a Town. It fits into the Modelling (Year 1) and Simulation (Year 3) units, and possibly has some relevance in Geography!
Click a building or feature, then click on the map to place it. Click on the train to send it on its way. NB On the Options tab, you can turn off the irritating background sound, but you have to do this each time.
Mandy:)