Their 12 year old cousin has introduced my 4 year old boy/girl twins to iPad games but all the ones we seem to download - even the bought ones keep asking them to spend more to keep playing….and the tantrums that ensure when I refuse to give them my password is scary - what games can I buy that will keep them occupied (we have a five hour train trip to Cornwall on FRiday) - this iPad thing has cause more tantrums that anything else ever introduced to our house - I tried throwing it in the bin…even though its my iPad ,,,,but they screamed till I got it out again…