Selection of the President.
Sound Test#
On the title screen, press A, A, B, B, Start to enter a simple sound test.
Dialog Test#
Enable the Game Genie codes NXVVXKZX and VVVVUKSV, and enter the sound test as above. You'll arrive at a screen where you can view all the dialogs in the game.
Unused Text#
There are two hidden copyright strings in the ROM. The first, at offset 3EF1C, says:
1989ANOTHERltd.
Another copyright string, just a bit further down at 3F018, says:
Another Ltd. 1989/6/09 New バージョン
(Source: CaH4e3)