One can sustain themselves indefinitely on a small budget with only Gog/Steam sales and indie games. That's pretty much what I've been doing these past few months.
I gave on The Longest Journey -- brilliant story and characters, but seriously lacking in the gameplay and puzzles department -- to play the indie Point 'n Click adventure game, Machinarium. Loved it, but I beat it yesterday. Now I'm going to start a game of Star Wars: Dark Forces and go back to the days of hunting for coloured keys.