This game has hidden developer credits.
Based on the popular flying space rock!
The first one, "DO NOT ERASE !" is the default message for erasing the text at the start of each round.
The other 9 messages can only be triggered by holding the P2 Fire button while erasing text, and the messages displayed depend on the current area:
© KUMAGAYA !
|Taito Kumagaya Laboratory was an offshoot of Taito that designed games like KiKi KaiKai, The NewZealand Story, and this.|
NAGATA OGATA !
|"NAGATA" is Yoshihisa Nagata, a programmer at Taito.
"OGATA" is Masaki Ogata, another Taito programmer.
They ended up working together on another Taito game, Plump Pop.
OGURA TAKAHASHI !
|"OGURA" is Hisayoshi Ogura, a composer who founded Taito's in-house band Zuntata.
"TAKAHASHI" is Eikichi Takahashi, who would work with Hisayoshi Ogura on Darius.
IWAI IWASAKI !
|"IWAI" is Akira Iwai, who previously worked on Super Speed Race Jr. before going on to Arkanoid.
"IWASAKI" is Nobuyuki Iwasaki, and this seems to be his first credited game.
SASAKI ISHIDA !
|"SASAKI" is Daisuke Sasaki, another Taito programmer.
"ISHIDA" is Kazutomo Ishida, and guess what? Programmer. Imagine that.
They're the sole people credited for programming KiKi KaiKai.
WATABE IIJIMA !
|"WATABE" is Yoshiyuki Watabe, whose only other credited work is The Ninja Warriors.
"IIJIMA" could be Tadashi Kimijima, who also worked on Arkanoid and Bubble Bobble. Could be.
TANNO SAKO !
|At this point the names get harder to pin down.
The closest match for "TANNO" is Mikio Hatano, director of KiKi KaiKai.
"SAKO" might be Hiroyuki Sakou, who designed several Taito games in the 80s.
NISHIKADO KOMA !
|"NISHIKADO" is Tomohiro Nishikado, creator of Space Invaders. This is a pretty unusual credit.
His last directed game was in 1980 and his first producer credit was in 1991.
"KOMA" could be Youzou Koma, whose only other credit was for Operation Thunderbolt in 1988.
SPACE RANGER !
|Now this is just gibberish.|