 In the original version, Yumemi is only voiced during the beginning and ending scenes, while other characters are not voiced. When Planetarian was released for Windows PCs on CD-ROM, Yumemi had full voice acting. The PlayStation 2 (PS2) port offers full voice acting for the entire cast. Other changes to the PS2 version include a higher resolution for the computer graphics and an extended soundtrack. All other later versions contained full voice acting.
