As a note, I have not included games which are mockups of professional games, for anyone wondering why Finlay_Cool's mariokart reproduction is not on the list. :P
"The Ghunough 2 - The Elemental Crystal" by Will_Wam
As you travel on your quest for the Elemental Crystal, you face many enemies...
This project is one of my favorites mainly because of how long it entertained me, the storyline, and because not for one second did I want to quit and lose.
"Blok" by mattspataro
As you make your way through a maze of obstacles, you must avoid getting shot, avoid spikes, and avoid falling off the platform!
Although in the end, I was defeated by the difficult levels, the professional graphics along with the overall experience was enough to earn this project a spot in my favorites.
"Seesaw Balance" by TM_
The objective of this game is to get your ball to the goal by controlling paddles to bounce it around.
This game ate quite a few hours of my time. I mean, um, I totally didn't get addicted to it and I most definitely didn't use up more than ten hours mastering it... just ignore my top scores. xD
"Creature" by -TheDoctor-
In this game, you play as the son of a scientist who studied the Creature. Your goal is to retrieve the book, your father's research.
Although around fifteen minutes in game play, this game feels and looks like real life and is a breathtaking experience all-around.
"Burrow Blitz" by griffpatch
You are the Scratch cat, who must collect all of the coins without getting trapped, squashed, or caught by enemies.
The combination of skill, strategy, and luck is what pushed this game to the top of my list.