Basically just list of consoles you played in chronological order and the first game you played on them starting with the earliest. If you can't remember which was the first, just do one you played a lot that could have been the first one.
Gameboy (not colour) - Super Mario land
Computer - Heroes of Might and Magic
Gameboy colour - Pokemon red version (though technically that wasn't a gameboy colour game)
PS1 - Toy story racer
PS2 - Rayman
Gameboy advance - Doom II
XBOX - Halo combat evolved demo
Nintendo D.S. - Starwars Episode III Revenge of the Sith
Nintendo Wii - Wii sports.
Sony PSP - Resistance Retribution or Little Big Planet. (I did however play Monster Hunter Freedom on my brother's PSP before I had one of my own).