My favorite games are:
Monkey Island 3 - Best adventure game I played
Devil May Cry 3- I fell in love at first sight
Witcher 3 - an amazing game
Ken ga Kimi and Black Wolves Saga- best otome(visual novel) games I played
My favorite game all time is Shinobi. I used to play it in the grocery store when I was barely tall enough to reach the joysticks and it's always been a game I can jump into and play any time. The first boss scared the crap out of me the first time I saw Ken Oh, that shit was wicked. Shinobi and Rolling Thunder were both my favorites but Shinobi wins by a small margin, and it's sequel Shadow Dancer was great too.
It is really difficult to pick one but if I have to, I guess F.E.A.R. the first installment. The 2nd and 3rd was kinda botched. Story was rushed, graphics changed too much not the same. Dont get me wrong Fear 2 Project Origin and F.3.A.R. the 3rd one is fun to play but its not on the same level as the 1st one. That one was really fun. Is really fun I still play it sometimes. I heard the NPCs, the monsters and soldiers you have to blast actually had quite a good programming in their ai. Compared to a lot of games it stand out well and it was made by one guy I read from an atricle some time ago.
https://www.rockpapershotgun.com/why-fears-ai-is-still-the-best-in-first-person-...
What I will say will most likely be wrong for someone and may not be liked by the majority. So be it. But I think that, in a place dedicated to games created by lone developers, the most important game is his own, so I want to answer exactly like this. I want to love my creation. What I create will always be a part of me, and of course, it's important to me that this part of me becomes something for others. This is exactly why games are created.