Gulkave (MSX)

Gulkave
Developer: Compile Publisher: Pony Canyon Platform: MSX Released in JP: 1986 This game has a hidden developer message. This game has debugging material. This game has a hidden sound test. This game has a hidden level select.

Test Mode

On the title screen, press Right, Right, Left, Left, Up, Down, Left, Down, Down, Down. The same test mode is also in the SG-1000 version.

Developer Message

At the very beginning of the ROM, this rather angry message can be seen:

Original Text
GULKAVE KONOMAE ROM O COPY SHITA YATSUGADENWA SHITE KITA KEDOCOPY SHITA YATSUO YOROKOBUSOFT MAKER GA DOKONIARUTOIUNDA BAKATARE. SOUIU YATSUO MIRUTO NAGURITAKU NARUZE. KOREMITA YATSUMO COPY WA SURUNAYO. NANIKANGAETE IKITEYANDA. COPY SURUYATSUWA. BY PAC FIREE.G.K.
Japanese
ガルケーブ この前ＲＯＭをコピーした 奴が電話してきたけどコピーした 奴を喜ぶソフトメーカーがどこにあると言うんだ馬鹿垂れ。 そういう奴を見ると殴りたくなるぜ。 これ見た奴もコピーはするなよ。 なに考えていきてやんだ。 コピーする奴は。 BY PAC FIREE.G.K.
English
Gulkave I got a call earlier from some guy who copied one of our ROMs. But what kind of software dev would be happy to hear someone pirated their game? Idiot. When I see people like that, I just wanna punch them. Hey, person reading this! Don't you copy games either. What the hell are they thinking? Those idiot pirates... BY PAC FIREE.G.K.

(Source: GoldS - Original Find)

(Source: divingkataetheweirdo & GlitterBerri - Translation)