I did not yet share my opinion on this. And to be fair, this is the most enjoyable port of v2.1's levels to this day, outside of SRB2 the Past, but this is in campaign form compared to that, at least. I only give it four stars due to the lack of legacy elements. If you can port those, the full five stars will be awarded to this amazing level pack. I would like to see other past versions of SRB2 in campaign form though, more specifically SRB2 v2.0 and Final Demo! That'd be even cooler to see!