Sonic the Hedgehog 3D is a free fan game about a famous SEGA mascot, Sonic, and it is made on Build Engine with additional EDuke 32 port. The game was inspired by two classic Sonic series: Mega Drive/Genesis and Sonic Adventure series.
I like Sonic games!!! More interesting and exciting game I have never met. Would love to see a sequel. I hope the authors did not abandon the project.