SRB2 TGF - 6/10, Good fangame for its time, didnt hold up though.
SRB2C - 7/10, Hey look, SRB2TGF made by one of the guys who made SM! And, it's slightly less jank than TGF. Now including Cutscenes!
SRB2 Halloween and Christmas - 6/10, good start to the DooM Legacy era.
SRB2 Demo 1,2,3,4 - 7/10...