DS8 got Infinity and Skylanders Swapforce for birthday in October. Loves both but as Retropear says the toybox is like Minecraft, which he also loves, so enjoys that aspect and also the missions.
But be aware you need to buy the figures to advance/get the most out of the game - we have all the figures that are out at present but believe they will be releasing another range of figures in the future - so the cost will mount up. If you are willingly to spend it is good. DS8 and DS10 had great fun with the Pirates of the Caribbean/Lone Ranger figures.