Blue Sphere Plus

Blue Sphere Plus
Version: 11
Last release: May 16, 2011
Status: Active
System: Sega Genesis/Mega Drive
Original game: Sonic & Knuckles
Credits: MainMemory

Blue Sphere Plus is a Sonic & Knuckles hack created by MainMemory. It is based on the Blue Sphere Standalone ROM, with new features.

New Features

• Pressing or now cycles between Sonic + Tails (blue + orange bumpers), Sonic alone (both blue), Tails (both orange), Knuckles + Tails (red + orange bumpers), and Knuckles (both red).
• SRAM support to remember the character you last selected, and the last level completed.
• If holding while pressing to start a stage, the player starts all stages from then on at top speed (not saved between sessions).
• You can now press at the first screen to reach the menu, instead of holding + + .
• Select "SONIC 3K" on the first menu, and you will play through all 14 of Sonic 3 & Knuckles' Special Stages in order, including the 2 "secret" ones. Saving and code entry are disabled while this mode is active, and the game will reset upon completion of the last stage.
• Can Lock-On to other ROMs, including the Sonic games that would normally enable special modes when locked-on to Sonic & Knuckles.
• Users can lock-on a file containing custom levels to play.

Planned features to be added

MainMemory has recently stated that he started working on it again, trying to add new things, including possible Retro Channel support, a count of the Perfects you've gotten, whether you've completed S3K mode, and a score tally.

Known Issues

• On real hardware, sound effects cause the music to glitch.
• The code for a level from a locked-on ROM is displayed without having to complete it first.

Downloads

Download Blue Sphere Plus File: Blue Sphere Plus v11.7z (267 kB) (info) Current version: 11

Previous Versions

• Version 10 ^(info) (266 kB)
• Version 9 ^(info) (266 kB)
• Version 8 ^(info) (266 kB)
• Version 7 ^(info) (265 kB)
• Version 4 ^(info) (265 kB)

External links

• 
  Sonic Retro discussion thread