Hang-On (Arcade)

Hang-On
Developer: Sega AM2 Publisher: Sega Platform: Arcade (Sega Hang-On hardware) Released in JP: July 5, 1985 Released in US: August 1985 Released in EU: 1985 This game has hidden development-related text. This game has unused graphics. This game has unused music.

Hang-On is a motorcycle game notable for being the first "full body experience" game, featuring a rideable bike-shaped cabinet, as well as being one of the first 16-bit games with (pseudo) sprite scaling. So, you know. Pretty important developments.

Unused Graphics

Note: Gray backgrounds have been added for better visibility; they're not part of the graphics themselves.

The standard SEGA logo, likely used before the fancy sprite-based logo was put into the game.

An older version of the game's logo, found in pieces throughout the background graphics ROM. Again, this BG-based logo was replaced with a sprited one that showcases the game's pseudo-scaling features.

An older, simpler game map, with progress markers for every possible curve and straight section on the map.

Location markers that would have been used on the old map. Notice that there are only four stage numbers and four pieces of scenery (besides the Start and Goal banners). It's possible that the desert stage wasn't part of the game when these markers were drawn.

These markers were meant to be used on the final game map. They were likely dropped in favor of the more impressive cyclist background.

Old	Final

The third, and thankfully last, "GOAL" graphic. This background graphic was replaced with a much larger sprite.

(Source: Original TCRF research)

Unused Music

The last 3 seconds of the ending track are usually cut off by a jump to the high score screen.

(Source: Original TCRF research)

Development Text

There are a few section labels in the sound CPU:

Address	Name	Address	Name	Address	Name
28E8	MOTOR	2D70	EFECTOR	30E3	CAM SPD
298B	SELL	2F26	EXOST GAIN	3127	CHAMBER GAIN
2A83	RUN	2F98	EXOST CYC	3193	CHAMBER CYC
2AF4	CALCYC	3017	CAM GAIN	3237	EXENOISE
2BE4	CALSPD	3096	CAM CYC	32CF	DEBUGING

(Source: Original TCRF research)