The Common Image Generator Interface (CIGI) is a simulation standard for connecting 3D visual applications with simulation hosts. The CIGI SDK for Unreal enables Common Image Generator Interface support for Unreal using either CIGI 3.3 or CIGI 4.0. The CIGI plugin is compatible with WGS-84 positions, which makes integrations with world visualization plugins such as Cesium (as shown in the gallery images) very simple. You may use your own host or the comprehensive Host Emulator provided with this software. Full source code is provided in C++ for SDK licensees.