Submitted by: Solly

At the very beginning of Seaside Hill, 3 boost rings would appear after a "Flying" formation change gate, which would fly you to the top of the small hill. The final game doesn't include these, you simply run further ahead and hit some springs.

Submitted by: Solly

Because the game didn't have complete voice overs at the time of E3, there was no chatter between characters,and any hint boxes would just show the text with a blue semitransparent rectangle surrounding it. The text is different in the final game, and the blue rectangle was deleted.

Submitted by: Solly

Here is another shot of the original text.

Submitted by: Solly

Because there are no level ups in the E3 build, the little dots don't appear next to the characters. Also whenever you pass a checkpoint you'll recieve an item. For example, if you pass the gate with Sonic, you'll get Speed Boots. If you pass with Knuckles you'll get a shield.

Submitted by: Solly

In the final version there are bits of block to the left and right of Sonic a little further up, but the E3 demo doesn't have them.

Submitted by: Solly

These 3 rainbow rings seen here are not in the final game. In the final a box can be found to the left which allow you to get all the way across.

Submitted by: Solly

These Balloons are twice as large in the final version. They were made larger to probably make it easier.

Submitted by: Solly

To the very VERY far back, underneath the far green strip, is completely empty. In the final columns have been added where EggPawns shoot down at you.

Submitted by: Solly

Again, more voiceless hints.

Submitted by: Solly

This is the end of Seaside Hill. In the final there is an additional platform right before Sonic which allows him to land without pressing foreward, and two more breakable blocks to the left and right of him. In the E3 version they were yet to be added.

Submitted by: Solly

Finally, the 'end stage' scene. The characters seem to float around the place in thie early version, or it might be the odd camera choices.