The semi-open design will not suit many but it sure does look pretty.  Apexgaming, a gaming brand developed by Solytech announced their open frame type PC case "G3" , it makes use of two-sided tempered glass.

Apexgaming has released the open frame type middle tower PC case "G3" that effectively attracts the system configuration. It is an all-metal product with a texture, and tempered glass is used on the left and right sides. The cooling fan can be mounted on the side (front) of the motherboard tray 120 mm x 3 and the top 120 mm x 3 in the highly breathable housing. A water-cooled radiator with a maximum size of 360 mm can be mounted on the front side. The drive bay layout is 3.5 inches x 4, 2.5 inches x 4. It supports a graphics card with a maximum length of 340 mm, a CPU cooler with a total height of 165 mm, and a power supply unit with a maximum depth of 180 mm. There are 6 expansion slots.

Supported form factors are ATX / MicroATX / Mini-ITX. The front I / O is equipped with USB3.0 x 1 and audio input / output. The external dimensions are width 225 mm, depth 509 mm, and height 453 mm.

G3 Market Estimated Selling Price $ 139.90