Yojigen

Background
Yojigen was a defunct company who was publishing video games, that was formed in 1993, and went defunct in 1995, laying off employees and forcing it into bankruptcy.

1st Logo (September 23-December 23, 1994; August 4, 1995)
Logo: On a white background, we see the text "YOJIGEN" with a dot on the "I".

Variants:
 * On the Super Famicom game of Zenkoku Koukou Soccer, "PRESENTS" is shown below the logo. Plus, the background is.
 * On the Super Famicom game of Super Snakey, "DISTRIBUTED BY:" is shown above the logo. Plus, the logo is in gradient (except the dot is not in  gradient) and the background is black.
 * On the Super Game Boy game of Super Snakey, "DISTRIBUTED BY:" is shown above the logo. Plus, the logo is with black outlines.
 * A B&W variant exists on the Super Game Boy game of Otogibanashi Taisen.
 * A B&W variant exists on the Game Boy game Powerful Mahjong: Tsugi no Itte 100-dai.

Technique: None.

Music/Sounds: None.

Availability: Seen on Japanese-exclusive Super Famicom and Super Game Boy games published and distributed by the company, such as Mahjong Sengoku Monogatari and Hana no Keiji.

2nd Logo (November 17, 1995)
Logo: On a light blue-white-light blue background, we see the Yojigen logo from before with the text "PRESENTS" below, appearing via reverse stretch.

Technique: 2D animation.

Music/Sounds: None.

Availability: Seen only on the Japanese-exclusive Super Famicom game of Mahjong Sengoku Monogatari and Hana no Keiji.