Sonic Spinball (8-bit)/Hidden content

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Sound FX Codes

On the options screen, highlight 'Sound FX' then play any of the following sets of sound effects. You do not need to wait for the previous sound to finish before playing the next one, the screen will shake after the last sound if entered correctly.

Screenshot	Sound Sequence	Effect
	00 08 02 08 07 05	Start the game with 9 continues. Due to a programming oversight, exiting the options screen after using this code will reset the continues back to the normal value. Immediately use a scene select code after this one to keep the cheat enabled.
	00 03 01 01 05 05	Start the game with 9 lives.
	00 05 00 03 06 00	The build version number will immediately scroll along at the top of the options screen.
	00 02 01 01 06 06	All in-game sprites are double the size. Note that this code makes use of a hardware feature of the SMS VDP that only functions properly on a model 2 SMS or a Game Gear. Attempting to use this cheat on a model 1 SMS will cause glitches. Attempting to use this cheat on an MD with a Power Base Convertor will not work at all, as the feature was completely removed from the Mega Drive VDP.
	00 09 00 01 06 08	Enables free movement mode. Pause the game and press to use it.
	00 02 01 05 06 06	Enables stage skip. Pause the game and press to skip to the next stage.
	00 01 01 07 07 03	Enables in game reset. Pause the game and press + to reset to the title screen.
	00 09 01 02 05 04	Inverts all in-game colours and increases the tempo of the music.
	00 04 02 05 05 07	Increases the tempo of the music.
	00 02 02 00 06 09	Inverts all in-game colours.
	00 04 02 09 06 04	Reduce game speed by 50%
	00 05 01 03 07 00	Reduce game speed by 75%
	00 06 02 04 06 03	If either of the previous two codes have been used, restore the game speed to 100%
	00 05 02 08 07 00	Reset the game. It is not clear if this a bugged code or the intended effect. No other effects have been noted.

Gravity Modification Codes

All of these codes enable you to tweak the gravity setting used in-game. The default setting is 8

Screenshot	Sound Sequence	Effect
	01 01 01 02 05 00	Set gravity to 0, the weakest available setting
	00 08 02 07 06 06	Set gravity to 2
	00 04 01 09 06 04	Set gravity to 4
	01 00 01 03 06 07	Set gravity to 6
	00 03 01 09 06 08	Set gravity to 10, the strongest available setting
	00 08 00 07 07 01	Set gravity to 80, gravity is inverted and very strong.

Hidden Monitor Messages

Hidden in each level is a monitor displaying the Japanese characters '見る' (this roughly translates to 'look' in English). Collecting each of these monitors will display part of a hidden message which gives hints on how to access some of the cheat codes. These codes modify that message.

Screenshot	Sound Sequence	Effect
	00 03 01 08 09 02	Change all hidden monitor messages to display 'HAPPY BIRTHDAY, BLL, 03-18-92...'
	00 08 03 01 07 01	Change all hidden monitor messages to display 'TRY THESE SFX! 02-11-66, 09-01-68, 02-15-66, 04-25-57, * * * FIND THE REST ON YOUR OWN. ***'

Scene Select Codes

The scene select codes are split into two parts. You must first enter a code to chose which subset of scenes is active and then immediately enter a second code to warp to the chosen scene.

Screenshot	Sound Sequence	Effect
	01 01 01 01 03 00	Enable the first subset of scenes. This is the default which will be used if you do not enter one of these codes first.
	01 01 01 01 03 01	Enable the second subset of scenes.
	01 01 01 01 03 02	Enable the third subset of scenes.
	01 01 01 01 03 03	Also enable the third subset of scenes. This appears to be identical to the code above.

Screenshot	Sound Sequence	With 1st set of scenes enabled	With 2nd set of scenes enabled	With 3rd set of scenes enabled
	01 01 01 01 04 00	Sega logo on GG / Title screen on SMS	Bonus Stage 1 Points Tally	Bonus Stage 3 Title Card
	01 01 01 01 04 01	Title screen	Lava Powerhouse Title Card	Bonus Stage 3
	01 01 01 01 04 02	1st cut scene (Fortress rising)	Lava Powerhouse	Bonus Stage 3 Points Tally
	01 01 01 01 04 03	2nd cut scene (Sonic and Tails arrive)	Lava Powerhouse Boss Arena	Final Showdown Title Card
	01 01 01 01 04 04	3rd cut scene (Sonic drops into fortress)	Bonus Stage 2 Title Card	Final Showdown
	01 01 01 01 04 05	Toxic Pools Title Card	Bonus Stage 2	Final Showdown Boss Arena
	01 01 01 01 04 06	Toxic Pools	Bonus Stage 2 Points Tally	Ending cut scene 1 (Sonic & Robotnik falling)
	01 01 01 01 04 07	Toxic Pools Boss Arena	The Machine Title Card	Ending cut scene 1 (Sonic & Robotnik falling)
	01 01 01 01 04 08	Bonus Stage 1 Title Card	The Machine	Ending cut scene 2 (Fortress destroyed)
	01 01 01 01 04 09	Bonus Stage 1	The Machine Boss Arena	Credits

Cheat device codes

These are cheat codes that can only be used with game enhancer devices. Support for these codes is available in most emulators.

Pro Action Replay

Unofficial codes (Master System)

Code	Effect
00DA2F:09	Infinite Lives.
00DC49:99	Infinite Rings (Turn off code at Point Tally).
00DA34:09	Infinite Continues.

Unofficial codes (Game Gear)

Code	Effect
00DA16:09	Infinite Lives.
00DC2F:99	Infinite Rings (Turn off code at Point Tally).