If this doesn't tell KONAMI anything, then I don't know what, and from the look of things... I dunno. You may say MG is dead since September 1st, 2015. I mean the moment MGS5: TPP was officially released, it died slowly. The Data isn't that 100% accurate. This is at least the latest data found at VGChartz.
Top Sales
# | Title | PS1 | PS2 | XBOX | PSP | PS3 | XBOX360 | PS-Vita | 3DS | PS4 | XBOX1 | PC |
01. | Metal Gear Solid | 6,030,000 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
02. | MGS2: Sons Of Liberty | -- | 6,050,000 | -- | -- | -- | -- | -- | -- | -- | -- | -- |
03. | MGS3: Snakes Eater | -- | 4,230,000 | -- | -- | -- | -- | -- | 390,000 | -- | -- | -- |
04. | MGS: Portable Ops | -- | -- | -- | 1,190,000 | -- | -- | -- | -- | -- | -- | -- |
05. | MGS4: Guns Of the Patriots | -- | -- | -- | -- | 6,000,000 | -- | -- | -- | -- | -- | -- |
06. | MGS: Peace Walker | -- | -- | -- | 2,080,000 | -- | -- | -- | -- | -- | -- | -- |
07. | MGS HD Collection | -- | -- | -- | -- | 1,100,000 | 700,000 | 440,000 | -- | -- | -- | -- |
08. | MGR: Revengeance | -- | -- | -- | -- | 1,500,000 | 500,000 | -- | -- | -- | -- | -- |
09. | MGS5: Ground Zeroes | -- | -- | -- | -- | 610,000 | 140,000 | -- | -- | 1,310,000 | 300,000 | -- |
10. | MGS5: The Phantom Pain | -- | -- | -- | -- | -- | 160,000 | -- | -- | 3,040,000 | 830,000 | 90,000 |
11. | MG Survive | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
MGS: The Twin Snakes | GameCube | 470,000 |
Top Sales
# | Title | Sold |
01. | MGS2: Sons Of Liberty | 6,050,000 |
02. | Metal Gear Solid | 6,030,000 |
03. | MGS4: Guns Of the Patriots | 6,000,000 |
04. | MGS3: Snake Eater | 4,620,000 |
05. | MGS5: The Phantom Pain | 4,120,000 |
06. | MGS5: Ground Zeroes | 2,360,000 |
07. | MGS HD Collection | 2,240,000 |
08. | MGS: Peace Walker | 2,080,000 |
09. | Metal Gear Rising: Revengeance | 2,000,000 |
10. | MGS: Portable Ops | 1,190,000 |
11. | Metal Gear Survive | -- |