Well, yesterday I created a thread talking about some digital game
distributors that offers games without any form of DRM, but they are not open
source.
In my opinion, a game it cannot be treated like a application, also Scummvm.
It's like "hey, don't put VLC on repositories, it can read non-free video
codecs!". But then, VLC it's an awesome video player, just as Scummvm is an
awesome oldgame simulator.
A game is not something that you are gonna work with, it's entertainment,
there is no need, apart from modding it (a huge list of PC games have modding
tools), to change anything on the original source. That is my opinion, at
least.
