Nice picture you made there. You have great artistic ability.
I don't have any of those MSX2, MS DOS, or Commodore 64. Although I had an NES, I didn't play a Metal Gear game until Metal Gear Solid came out on PS1 back when I was in High School. I'm a huge fan of the Metal Gear Solid series.
I have...
Metal Gear Solid: The Twin Snakes(GC)
Metal Gear Solid 2: Sons of Liberty(PS2)
Metal Gear Solid 2: Substance (Xbox)
Metal Gear Solid 3: Snake Eater (PS2)
Metal Gear Solid 3: Subsistence(PS2)
Also I have both Metal Gear and Snake's Revenge for NES, but I have not played either though to the end. I do plan on buying Metal Gear Solid: Essential Collection, mainly because I sold my MGS1 back when I needed some money. Finally, I have started saving for Metal Gear Solid 4 PS3 Bundle, but I may end up waiting until Christmas of 2008 to buy that.