Gulkave

Gulkave is a horizontal shmup for the MSX and SG-1000/SC-3000.

Test Mode#

A test mode is present in both versions of the game, but are accessed with different button codes on the title screen.

In the MSX version, press Right, Right, Left, Left, Up, Down, Left, Down, Down, Down.
In the SG-1000/SC-3000 version, press Up, Up, Down, Down, Up, Right, Down, Left, Down, Down.

At the very beginning of the ROM in the MSX version, 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
<pre lang=ja style="font-family:"MS Gothic",monospace;"> 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)

To do:
There's more.

MSX	SG-1000/SC-3000