Sonic the Hedgehog Level Creator
From Sonic Retro
The Sonic the Hedgehog Level Creator is a flash Sonic game on the PlaySEGA Website.
Anyone can play created levels, but only VIP Members can create new ones.
Using its built-in level editor, Members can place level chunks and objects, like rings and badniks, into a level grid. The only required object in the editor is the signpost to end the level, anything else is up to the user to make.
Once finished editing the level, the level is uploaded to the pool of levels on PlaySEGA to let anyone play them.
The freedom allows for different types of levels, including speedy ones with many hills and loops, thinking levels with only one way to the goal, or even levels filled with rings and speed shoes just to rack up points.