A very nice collab.
This will make collab fans happy, i for one love collabs with any decent efforts and this had much more than that. I was very impressed with the effort, organization and pure talent that went into this. This collab had something that quite a few lack, sheer talent and consistancy in each video. Well here is my review.
The graphics were definitely good throughout, though some were worse than others they were all definitely above the average and even by themselves they could pass judgement. The drawings were very accurate to the characters in some and in others they coud have been better but they were good nonetheles. I liked the colours and backrounds most of the time and same goes for the animation. The overall style was awesome too. I say this for every collab i review and i will say it again, i give collabs extra style points because it is really cool to see so many different animating styles in one movie. That, and in this case your theme, sonic flash have been done before but not yet in a colab form from what ive seen. The sound was great too, nice choice of song and i remember it from one of the sonic games.
Overall another wonderful collab, this deserves the score it has and should make the collab collection page much better. I hope this is not the last thing to come from any one of you! 4/5