Roadster

Roadster
Developer: TOSE Publisher: Tonkin House Platform: Game Boy Released in JP: October 19, 1990 This game has hidden developer credits. This game has a hidden level select.

Watch out for whiplash.

Unused Copyright

An unused copyright screen should present itself after the ending, but it never shows. Game Genie code 021-9EF-E6E will enable the screen.

(Source: nensondubois)

Cheats

To activate the below previously undocumented (save for the course select) cheats, select a driver, then choose yes when asked if you'd like to change the driver's name. Change the driver's name to one of the names in the Name column below, then highlight the corresponding letter in the Letter column and press Start+Select. A sound will confirm correct entry.

Cheat	Name	Letter
Course Select (press A/B at the race number screen to cycle through the courses)	TAROU	Y
255 Continues	HANAKO	J
Max Speed	YUUTA	T
Opens hidden screen where the body and tire stats of your car can be modified	RYUITI	O
Harder Difficulty	TAKOSU	T
Removes all arrows from the track	MIYUKI	M

(Source: cah4e3)