I think the game, as a concept, is really well done. And the execution is, for the most part, very well done. I love the little homages to the Dreamcast (even the name is an homage! :D) and even including some of Sonic Adventure's little imperfections, like the voice acting being overlapped on top of each other (the voice acting btw is really good) to make it a true experience you'd find on the Dreamcast. Unfortunately there are some problems like some bugs here and there, but my biggest complaint is the map is often very open and big but there's nothing to really see or interact with. I think adding more things to do would greatly help with that though. Overall, it's hovering above 8 to 9 out of ten for me.