Infinity is a series of visual novel video games mainly developed by KID. The first game in the series, Never 7: The End of Infinity, was originally released as Infinity for PlayStation in 2000, and was later ported to other platforms. Since then, four more games have been developed, as well as a remake of the second game. The first three games were directed by Takumi Nakazawa, and the first four were planned and written by Kotaro Uchikoshi and composed for by Takeshi Abo. The fifth was written by the otome writing group Run & Gun, and featured sound production by the band Milktub. Alongside Memories Off, Infinity was KID's flagship series.

Never 7: The End of Infinity is a visual novel video game developed by KID. It was originally published by KID on March 23, 2000, for the PlayStation as Infinity, and has since been released on multiple platforms. It is the first entry in the Infinity series, and is followed by Ever 17, Remember 11, the spin-off 12Riven, and the reboot Code_18.