Jak and Daxter - can be VERY hard at times sometimes to the point of rage quit but it does have its moments where its rather good. 7/10
Jak 2 - Better than Jak and Daxter because guns were added and it is less irritating than the 1st game. 8/10
Jak 3 - Didnt like the racing all that much. To be honest I havnt played this game all that much but there was to much racing in the beginning so its not all that fun at first and I dont know what happens later on so ask somebody who has beaten it. From what ive played it deserves a 7.5/10
Overall the storyline was easy to follow, but the gameplay was meh. overally id say 8/10 for the whole collection.