In that, the characters are animated in a traditional 2D way, while the mecha are done in 3D. For most modern mecha anime, this is pretty common but it’s interesting to see Obari go this route.
Coupled with excellent animation and a wonderful musical score by Kohei Tanaka, you have the makings of a modern mecha anime classic. Not least because Tomino placed a gamer, Gainer Sanga ...