Kingdom building

MC is an engineer. More to functional than beauty. I feel heartache when he build an apartment but looks like bird nest. To be fair, it is a fortress but I bet any architect will have blood boil when read this.

MC transmigrated into the game he played before he was murdered by the big guild. He’s fight for the body he occupied.
However, he transmigrated before the game was released. As far as I understand, this will be time travel too. The recent chapter still before the released game timeline. Not sure if there would be double of him (MC in the game timeline + MC in the earth timeline) when the game releases.