Ok, so just in case I'm not allowed and am infringing some sort of copyright....this inflatable 'four-in-a-row' looks fab fun to me and is selling for an ULTRA FAB £1.79!
It comes with 21 red-player pieces and 21 yellow-player pieces and before you panic, they are made of foam and don't need you to have lungs of steel like Superman to blow each one of them up; only the frame is inflatable and I reckon we could all manage that.
So the rules are exactly the same as that other well-known game that involves placing four of your counters in a row before your opponent does whilst trying to prevent them from doing the same thing.
Enter discount code ff15 at the checkout and the published price of £1.99 will drop to £1.79. Standard delivery is £3.99 unless you spend over fifty quid in which case it's free.
Even if you don't need anything else at Halfcost, I still think that the total cost including delivery of £4.78 for this is a great deal and a price worth paying.
Thanks to amibees over at HUKD!