"KingBase is a new free chess games collection, usable with most free and commercial chess programs.
Every month, new chess games are added, existing entries are revised and duplicated games are removed.
KingBase is a free alternative to commercial products, but has some limitations:
No annotated games.
No games with less of 6 moves.
No games before 1990.
No games with ELO-rating
KingBase (05/2015)
OVER 1.6 MILLION MODERN GAMES (YEAR > 1990), PLAYERS ELO > 2000
PGN Format
(multiple files order by ECO Code)
SCID Format
(works with SCID and SCID forks)
CBV Format"
http://www.kingbase-chess.net/