Thanks a lot Nathan, the game is totally made from Raycasting Sprite techniques, those aren't 3D cubes, they are tesselators represented with bounds and a single sprite that follows the camera, i found that i can fix this by hiding unwatchable castle blocks, like those in the inside, by the way, i really like how is going the development, im finishing for the end of the jam a Creative Mode, so you can build your castle and fight against it :3
"Sorry for the delay of the reply"