This DLL plugin fixes the rendering bug of a city's region view thumbnail that affects large screen sizes. The bug occurs with any vertical screen resolution larger than 1024 pixels. When saving a large city tile, it results in an incomplete rendering of the terrain, leading to a visible gap in the region view. System requirements SimCity 4, version 1.1.641 (the digital edition) (more info) Windows 10+ or Linux Installation Copy the DLL into the top-level directory of either Plugins folder (place it directly in <Documents>\SimCity 4\Plugins or <SC4 install folder>\Plugins, not in a subfolder). Alternatively, the mod can be installed with sc4pac: memo:region-thumbnail-fix-dll Troubleshooting The plugin should write a .log file in the folder containing the plugin. The log contains status information for the most recent run of the plugin. If no .log file is written, the DLL failed to load. In this case, make sure the Microsoft Visual C++ 2022+ x86 Redistributable is installed. Source Code Available on GitHub. Thanks to @Ulisse Wolf, @rsc204, @redfox85 and @Eggman121 for testing the DLL.