All human v human, computer v computer, and computer v human games available at FICS, filtered to 2000+ and 10+ moves.
FICS HvH — 7,513,735 games | 6.12 GB PGN | 1.05 GB 7z
FICS CvC — 914,770 games | 0.99 GB PGN | 193 MB 7z
FICS CvH — 568,628 games | 487 MB PGN | 80 MB 7z