I have amassed over 900 games in my library, for almost nothing because of game bundle sales and free games found on reddit FreeGameFindings. My favorite bundles include HumbleBundle, Inde Gala, and Bundle Stars. They all have email newsletters, which I recommend.

Do I have time to play that many? Not really.
Do I enjoy having them all? Absolutely.

It's nice to know that even with the amount of games I have now, I will never run out of an interesting game to play.

My favorite game styles are Puzzle and Racing games. If you have a recommendation for good brain teasers, let me know!