Geneforge is a series of computer role-playing demoware video games by Jeff Vogel of Spiderweb Software released for Microsoft Windows and Mac OS systems. There are five games in the series: Geneforge, Geneforge 2, Geneforge 3, Geneforge 4: Rebellion, and Geneforge 5: Overthrow. As with all Spiderweb Software titles, graphics and sound are limited and not the main focus of the game. Instead, Vogel concentrates on creating involved and engaging plotlines (which gives the series a dedicated fanbase among fans of the "classic" RPGs of the 80's and early 90's).
Source: Wikipedia, "Geneforge (series)," available under the CC-BY-SA License.