I have a new idea can you make gradients like primery and secondary it will be very cool and please will make a singleplayer because a lot of people have'nt enternet connection and if you will make servers where we will can play in real time with other players it will be interesting. If you will make textures it will be very cool but i think that it is hard and gradients are good idea.
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sorry for my bad english i'm russian but i am learning english)