First turn-based Metal Gear game

First turn-based Metal Gear game
Who
Metal Gear Ac!d (Konami, 2004)
What
First
When
2004
Metal Gear Ac!d upset some Metal Gear fans in 2004 when it became the first game in the series to veer away from the traditional stealth-action gameplay in favour of turn-based strategy. While this radical change in gameplay for what was also the first Metal Gear game on the PSP split opinion among Metal Gear fans, it was still popular enough to spawn a sequel. Guinness World Records Gamers Edition 2009.