SilverStone Intros ALTA G1M Micro-ATX Case | TechPowerUp
 
SilverStone introduced the ALTA G1M, a vertical tower-type MicroATX case. with a desk footprint of just 20 cm x 30 cm. With your hardware stacked vertically in this 50.7 cm tall case, you get to free up space on your desk. The design allows for an stack airflow cooling mechanism, with just one intake at the base, and an exhaust up top. The Micro-ATX motherboard tray is oriented such that its rear I/O points upward, letting you install your graphics card along the height of the case. Exhsust from a tower-type air CPU cooler would point upward, too. Additional cooling, in the form of two 120 mm exhausts pointing to the rear, and three to the side, provide space to mount a radiators along the side panel. The case takes in an SFL-L power supply using an internal AC cord extension. and a fixed-location AC receptacle.

Available in two color options—graphite black and matte white, the SilverStone ALTA G1M can house graphics cards up to 35 cm in length, and CPU coolers up to 15.9 cm in height (if there's clearance from the side fan vents). The bottom intake fan for the cooling stack is a 180 mm SilverStone Air Penetrator that's pre-installed. Other vents include two 120 mm rear exhausts, and three 120 mm side exhausts. Up to four 3.5-inch/2.5-inch drives can be mounted in place of the side-panel radiator. The ALTA G1M is expected to be available in Asia by October 2021, and in North America and Europe in the following two months. Prices are expected to be around USD $170.
 
Personally I find this to be an outstanding well designed micro-ATX chassis. It's very easy on the eye to look at.