This game is rendered nigh unplayable by its level terrain. Instead of being tile-based with smooth slopes, the level assets were sloppily cut out of preexisting screenshots. The parts of the levels that were supposed to slope are jagged, and can't be walked up. Sonic stumbles on his way down.
The parts of the level that were supposed to be be flat terrain against walls were trimmed wrong as well, meaning Sonic will attempt to walk down the bevels of each step and faceplant into the floor below.
Once I reached stage 2, I just died over and over again as soon as the stage began. But, for whatever reason, the victory screen played OVER the Game Over screen. I wish I was recording.