Discworld games in order

All 4 games of the Discworld series in the order they came out, from The Colour of Magic (1986) to Discworld Noir (1999).

1. 
   The Colour of MagicZX, C64, CPC · Delta 4
   1986
2. 
   DiscworldSega CD, DOS, Mac +2 · Perfect Entertainment
   83Jan 1995
3. 
   Discworld II: Missing Presumed...!?PC, DOS, Saturn +1 · Perfect Entertainment
   8830 Nov
4. 
   Discworld NoirPC, PS1 · Perfect Entertainment
   925 Jul