The Friedrichshafen G.III
could barely be steered with an engine out. The company improved that by moving to a biplane tail, putting a rudder directly in each engine slipstream, in the Friedrichshafen G.IIIa
. Other improvements included a larger fuel tank, wider undercarriage, and ailerons with Flettner assists. A Gotha-style tunnel was added to the rear-gunner's position so he could lie on the cockpit floor and shoot to the rear underside. They started appearing at the front in mid-1918 and by August there were 95 in service.
This model comes in 1:144, 1:285/6mm/1:288, 1:600, and 1:700 scales. The 1:285 model uses propeller disks rather than blades, since blades are difficult to print at this scale. The 1:600 and 1:700 scale products have four planes
on sprues to keep the cost down. Those very-small-scale models have no propellers and no crew, since they are difficult to represent at that scale.
For more details and game information on the Fdh G.IIIa, see https://linen.miraheze.org/wiki/Friedrichshafen_G.IIIa