US Nintendo Power Previews In-Store-Promo for the Virtual Boy system and Mario's Tennis. Version 1, mentions 2-player support.
Transcript:
Enter the unique world of virtual gameplay with Nintendo Virtual Boy. The first three-dimensional stereo immersive 32-bit video game system ever. Virtual Boy is so advanced it can't be viewed on conventional TV or LCD screens. Virtual Boy comes with the Mario's Tennis game pack. Featuring a three-dimensional court with depth that only Virtual Boy can deliver. Play singles or doubles in either one or two player mode. Nintendo Virtual Boy. A 3-D game for a 3-D World.