In no particular order:

• Megaman X
• UNDERTALE
• Call of Duty 4 (campaign, never played MP)

I just really like those three games. They’re all fun in their own ways and in the case of Undertale it shaped a huge part of my 20’s because it was through playing it that I learned to love humanity even with its bumps and scrapes. It kept me from turning into a full on misanthrope.

Honorable mentions go to GTA Online (I have almost 6000 hours in that game total, it’s my favorite pastime), Call of Duty Black Ops 2 (multiplayer), and Titanfall 2.