Theme Park | GOG | £1.81 (RRP: £3.60)
What a classic. Theme Park is an excellent game that still ranks among Bullfrog's finest - and you can play it again at a 50% discount thanks to GOG (who guarantee Win7 and Win8 compatibility). Though Matt argues that graphics are "super important" these days, I'd rather play this than any number of shiny yet soulless games from the last few years. Thanks to jaystan @ HUKD!