REC ☆Doki Doki Seiyuu Paradise☆

In addition to the standard romance element where the player, as Matsumaru Fumihiko, can choose between dating Endou Momiji and Onda Aka, there is also a "multi-seiyuu system" where the player chooses between the potential voice actresses to play the voice in an anime. There are also web radio, photo shoots, and Akihabara events in which the voice actresses participate.

[Edited from Wikipedia]