Lot of them don't even work right, others are done within a half hour (rotgut).
At the most I'd like to keep the smaller ones cause they look interesting enough (summer night, don't go out, hand of doom), I have little to no interest in the others. Well maybe shatter, but the rest I would really like to get these off my hardrive I've downloaded free games better than these.

Ok so I think you can just remove the specific game folders and delete them and still launch stuff like summer night (an actual good game).
Shatter might also be worth keeping, although it wasn't a bad game, I don't see what else there is to do in it.

Also rotgut is 2.60 something gbs, really?