This is rather hard.

1 - Mount and Blade: Warband = My dream game in this flawed, flawed game. (5p)
2 - The Legend of Zelda: Skyward Sword = This was an endurance test. I finished the night before the Switch and Breath of the Wild arrived. (4p)
3 - The Legend of Zelda: Breath of the Wild = There's still more to play, the save file went poof, when my Switch died. I got it fixed for free though... (3p)
4 - Total War: Shogun 2 = My long road into Total War madness begun here and ended with Warhammer 2 and I'm done forever now. (2p)
5 - Broken Sword 5 = I fell in love with this series and it brought me back into Adventure games. (1p)

Honorable mentions: The Elder Scrolls 5: Skyrim would be 6, Super Smash Bros. Ultimate, Sushi Striker, Velocity 2X, Disgaea 5, Captain Toad's Treasure Tracker, Tropico 4, Endless Space, Splatoon 2, Mario Kart 8 Deluxe, Samurai Warriors: Chronicles, Pokemon Sun, Metroid 2: Samus Returns, Super Mario Odyssey & Valkyria Chronicles 4 (still playing through it.)