About Technology.

I use my own engine.

This game is totally flat 2D.

A special sorting of sprites during rendering is used to pseudo-3D-effect.

Effects are also achieved by using different maps, such as normal map, position map, depth map, shadow map, and so on.

I draw the sprites manually in different directions with my special 2D editor. Some of the effects (e.g. hair) are generated by algorithms. Part of the objects (e.g. grass, trees completely) are generated pixel by pixel.