I would argue that Photography isn't art (nor is origami). Its a technical skill rather than a artistic skill. Art is the selective recreation of reality, based on an artists value judgements. The first part is really important, "selective recreation of reality", photography doesnt fulfill this, as its not a recreation of reality, it IS reality. Then there's origami, which doesn't communicate anything about human existence, nor does it communicate anything about an artists sense of life, and to me anyways, is a craft skill.
Technical skill - photography, 3D printing, animation, 3D modelling (not exactly art)
Craft skill - origami, weaving, pottery, leatherworking, weaving, etc (not exactly art)
Artistic skill - painting, music, sculpture, etc. (this is art)
Games would fall into Artistic + Technical (overlap). Creating games is a Technical skill because it is trainable, involves tools, and software, but its also a Artistic skill because it involves a selective recreation of reality based on the artists value judgements (more so when its a game that communicates man's existence and sense of life, sorry Pong and Super Mario).
TLDR: Just because something looks pretty, and gets hanged on a wall, doesnt always mean its art.