P-Head the Logo/Unused content and prototypes

Unused P-Head Sprite
The PC version's game files there is an unused P-Head sprite which has the P-Head barfing. It would have been used as an attack and it was included on betas 1-3 but it was removed on betas 4-6 and the final release.

BBC 2 easter egg
The promo picture features a Test Card F template with a picture from the game with the 2 from BBC with the words bee bee see and too. It can be found on Rocky Zone Act 2 and it was only seen on Beta 6 from SF08's Game Pack 1 and so it can't be found on Betas 1-5. It was taken out in the final release.

Beta 1
Beta 1 includes...
 * An unused attack for the P-Head called the Barf added.
 * Early music for the title screen.
 * Early name for the game (A PBS Game).
 * There is no SF08 or PBS logos in the start of the game.
 * There is only levels 1-3. Beating level 3 had a message saying 'A PBS Game Coming Soon in 1998'.
 * Wales as a playable character added.

Beta 2
Beta 2 includes...
 * The P-Head's barf attack returns in this beta.
 * Early title screen music replaced with a new song.
 * SF08 and PBS logos added in start.
 * The early title screen name returns in this beta.
 * Levels 4-5 are added.
 * Splaat and the P-Pals as playable characters added.

Beta 3
Beta 3 includes...
 * Debug mode added.
 * Level 6 is added.
 * Beta 1-2's barf attack returns for the last time in this beta.
 * Game demo added while idle in the title screen.

Beta 4
Beta 3 includes...
 * The P-Head's barf attack from early betas removed.
 * SF08 Games logo replaced the original SF08 logo.
 * BBC 2, BBC, ITV and Carlton as playable characters added.

Beta 5
Beta 5 includes...
 * B and S as playable characters added.
 * Levels 7-9 added.

Beta 6
Beta 6 includes...
 * Level 1 can be only playable (on SF08's Game Pack 1).
 * Wales can be playable for the last time.
 * Early name from Beta 1 returns (on SF08's Game Pack 1)
 * BBC 2 easter egg added on this beta only on SF08's Game Pack 1.