I play this deck and I think my build is solid, but I really want to hear some of your guys build ideas to make it unstoppable. Also need better side deck ideas against some "anti-dark world" builds

Just side EED and DDV Viruses and dark smog. Usually if you have a good build it should go well since dragged down + viruses let you control their hand. Dark Smogs lets you control their grave. Grapha is a beat stick with a destruction effect so you should keep field advantage. Mind crush + Virus is also a nice combo to keep your opponents hand empty. Also I main 2 skill drain to stop other decks easily. For side deck, 1 more skill drain, 1 DDV (Main the EED), maybe mind crush and ALWAYS side in 3 MST's game 2. They WILL side all the grave and dark hate they can.

Thanks for the tips, much appreciated