Aqualife

Shougi... no, this is fishing, a very obscure fishing game based off the same engine as those horrible Shougi games made by Culture Brain/whoever else. Go outside!

ATTR_CHR
Located at is an unused ATTR_CHR  Super Game Boy command. Additional palette may have been planned, likely assigned to specific areas of the screen showing more than four palettes. Game Genie code will load ATTR_CHR instead of ATTR_TRN. ATTR_CHR is actually loaded once at so this feature may have been in active development.

SOUND
Internal Super Game Boy sound effects were planned to play at some point, or an idea for a Super Game Boy soundtrack was planned very early on. Game Genie codes will load SOUND instead of ATTR_TRN and will play any selected sound. SOUND is actually located at  and loaded once at  so this feature may have been in active development.

MLT_REQ
Honkaku Shougi - Shougi Ou was at some point going to support 4-Player Shougi as seen by the presence of an unused MLT_REQ command located at. Game Genie codes will load MLT_REQ.

CHR_TRN
One extra CHR_TRN with an invalid/unused bit setting ( should be ) exists and is located at. Not a clue what this was intended to display, could have been an early idea for an OBJ_TRN to be displayed at the title screen even though no CHR exists in the ROM. Game Genie codes will load CHR_TRN instead of ATTR_TRN. No additional CHR will be loaded into the SNES's VRAM because the pointers are not set, nor is there any additional CHR to point toward.