Well It feels like Lego may attempt to screw you over no matter what happens, If you change the Lego Feel and look of it because you don't make the Game With Lego you lose the look and feel and the original taste of blockland And may be sued by Lego if they decide it's to Lego looking and/or feeling, and on the other Hand it seems odd that once you showed Lego so much of your game they stopped contacting you and it would be pretty forgeted if they low blowed you and released their on blockland before yours comes out, And you can't sue because even though it was based on your game The game was really based on Legos and Well Lego owns The Legos copyright and you can't sue them for using what is their's, You're in a tightspot at this point but hopefully you can slip out for the better.