This is a comprehensive index of 4X video games, sorted chronologically. Information regarding date of release, developer, platform, setting and notability is provided when available. The table can be sorted by clicking on the small boxes next to the column headings. Notice how many of these games are sequels.
Games with additional 4X mode
These games include a mode of gameplay that resembles the 4X genre (i.e. global map instead campaign).
References
List of 4X video games Wikipedia(Text) CC BY-SA