If I go strictly by percentage I am way, way, way lower than 10%, however, any game I've done more than test out (in other words played for more than an hour or so) then my percentage is much, much higher. I freely admit I bought some games simply to have in my collection, oh I'll play them some just to fool around but I know I'll never finish them, others I buy with the purpose of playing and finishing, and the vast majority I do, a few here and there I lose interest in but overall I'd say I easily finish over 90% of games I actually play (that make sense?)