i personally probbaly fit into the 21-30% because my bro and i bought some games together that i particularly didnt care for, and other games i find just toooooo long. 

hbu?

what games have u not finished that you owned? 

90% of my collection

I make an effort to finish all my games. Some I just can't though. Like FFX2 (shudder), DK Jungle Climber, and Fatal Frame III (because I'm a sissy). Probably less than 10% for me.

0% i finished all my game and i do them at 100% ;)

Tooooo many. I have games still in the original factory seal. I'm just too busy doing other stuff, but I can't not buy a new game that looks interesting. Out of the 109 games I own, I've probably completed 10-15% of them.

Ill still have to beat 5 of my games.

I'm less than 10% I try to only buy games that I know I will enjoy.

I have about 50 disk games and about 30 psn games; out of them I have completed at least 70%. The problem is a great game seems to come out every other week, so I usually jump right in and start playing that cool new game until I either finish it or get stuck. I am currently clearing out my back log of games and I will soon be down to about 15 total games that I have not even touched yet. These games will either be traded in for credit on amazon so I can get new games such as 3d-dot heroes, Nier, WKC, Final Fantasy, MAG, Heavy Rain, and God of War 3. Or I will do a marathon run and complete them and then decide whether I am going to keep them or not.

Oh man, way too many.  Over 51% for sure.  I'm working on finishing them though.  I finally finished Half-Life 2 and Episode One today.

11-20% There were some games that thought I will never beat like Gradius. I tried soooo many times beating that game; til one day, I tried even harder and won but resulted in my thumb beign sore after that.