Sonic Mega Collection/Hidden content
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Due to changing events, this article is either no longer correct or needs information added to it to make it complete. Please update it so that it meets current knowledge.
Select Sonic 1 revision
By default, Sonic Mega Collection will load REV01 of Sonic the Hedgehog with the "spike bug" fix, but two other revisions can be accessed by entering button codes when displaying the Sonic 1 info screen:
- To play REV00 (described as "US"), press .
- To play REV01 WITHOUT the "spike bug" fix (described as "JP"), press .
- To replay the version by default (described as "JP2"), start the game then return to the menu, or press .
In PAL versions of Sonic Mega Collection, 60Hz mode must be enabled in order to input the above codes (hold on startup or, if playing on a Wii, select 60Hz in the Wii settings). Otherwise, it will play the standard US/PAL version.
Sonic CD remnants
When hacking into Sonic Mega Collection, one can find the entire European Sonic the Hedgehog CD manual. Not only that, but a preview version has Sonic CD on the list of games to pick. On the same preview version, in the movies section, you can find "Sonic the Hedgehog Movie Part 1" and "Sonic the Hedgehog Movie Part 2", likely meaning that the Sonic OVA was once in Sonic Mega Collection.
Three videos exist within the game's data and are all copyrighted to CRI Middleware Co. Ltd., which helped Sega with AV-related things for their GameCube titles. While it is likely Sega was testing the Sofdec player and simply didn't take these files out, the movies and songs take up roughly 20% of the data...and even then, there is still empty space on the disc. This space could have easily been used for more games...or even Sonic CD, which allegedly couldn't be included partly because of "space limitations".
sample.sfd is a test video for CRI's Sofdec video compression technique for developers. If opened by FFPlay or a similar player that can play Sofdec/ADX files, the unused song is played as well (see Music below).
loopbgv.sfd is nothing more than a CG water rippling effect somewhat like the Sonic Team logo animation from Sonic Adventure. It lacks any sort of sound and only lasts 12 seconds. The purpose of this clip, aside from showing off Sofdec's capabilities, is currently unknown;
smpinter.sfd is a 30-second clip of San Francisco. This might be from CRI, since they do have offices in San Francisco, It is suspected to be a test clip from the Dreamcast development kit.
- music24a.adx — A three-and-a-half minute track used for a video intended to demonstrate the capabilities of the Sofdec codec (see above).
- demosound.bin — The music for the 2P Battle menu from Sonic Adventure 2: Battle, likely meant to test the ADX music format.
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.
Official codes, PAL version
|Master Code (must be on).||Codejunkies|
|Have Blue Sphere open.||Codejunkies|
|Have Knuckles in Sonic 2 open.||Codejunkies|
|Have Sonic 3 & Knuckles open.||Codejunkies|
|Have Flicky open.||Codejunkies|
|Have Ristar open.||Codejunkies|
|Sonic 1: Infinite lives.||Codejunkies|
|Sonic 1: Always have 99 rings.||Codejunkies|
|Sonic 1: Freeze timer.||Codejunkies|
|Sonic 1: Invincible.||Codejunkies|
|Sonic 2: Infinite lives.||Codejunkies|
|Sonic 2: Always have 99 rings.||Codejunkies|
|Sonic 2: Freeze timer.||Codejunkies|
|Sonic 2: Invincible.||Codejunkies|
|Sonic 3: Infinite lives.||Codejunkies|
|Sonic 3: Always have 99 rings.||Codejunkies|
|Sonic 3: Infinite air - Sonic and Tails.||Codejunkies|
|Sonic 3: Freeze timer.||Codejunkies|
|Sonic 3: Invincible Sonic.||Codejunkies|
|Sonic 3: Invincible Tails.||Codejunkies|
|Sonic & Knuckles: Always have 99 rings.||Codejunkies|
|Sonic & Knuckles: Freeze timer.||Codejunkies|
|Sonic & Knuckles: Infinite lives.||Codejunkies|
|Knuckles in Sonic 2: Infinite lives.||Codejunkies|
|Knuckles in Sonic 2: Always have 99 rings.||Codejunkies|
|Knuckles in Sonic 2: Freeze timer.||Codejunkies|
|Knuckles in Sonic 2: Invincible.||Codejunkies|
|Sonic 3 & Knuckles: Infinite lives.||Codejunkies|
|Sonic 3 & Knuckles: Always have 99 rings.||Codejunkies|
|Sonic 3 & Knuckles: Freeze timer.||Codejunkies|
|Sonic 3D: Flickies' Island: Infinite lives.||Codejunkies|
|Sonic 3D: Flickies' Island: Always have 99 rings.||Codejunkies|
|Sonic Spinball: Infinite balls.||Codejunkies|
|Sonic Spinball: Have 3 Emeralds/Boss Room Open.||Codejunkies|
|Ristar: Infinite health.||Codejunkies|
|Sonic Mega Collection|