Fully half of Sherston's top 10 titles are aimed at infants.
In Charlie Chimp's Big Modelling Party, children's planning and problem-solving skills help Charlie and his cheerful chimp chums to prepare the best Caribbean party ever.
Then there is BBC Science Simulations, BBC Faiths and Celebrations, Money Mice and the ever-popular Where in the World is Barnaby Bear?
New this year is Izzy's Story Skills, narrated tales that develop key language skills through interactive activities, such as Finish the Picture, Who is this? and What happened next?
Sherston was founded by teachers 20 years ago and now has 200 staff worldwide and a catalogue of 130 educational software titles.