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# 🧠 SimCity 2013 – OptionScreenSize Resolution Map SimCity 2013 uses an internal parameter called `OptionScreenSize` to select screen resolution. This value is not a direct resolution like "1920x1080", but an index pointing to a predefined resolution and refresh rate combination. Thanks to reverse engineering, here is a partial map of known values: ## 📊 Resolution Table | OptionScreenSize | Resolution | Refresh Rate | |------------------|----------------|--------------| | 1 | 1024×768 | 100 Hz | | 3 | 1024×768 | 60 Hz | | 5 | 1024×768 | 165 Hz | | 6 | 1024×768 | 144 Hz | | 7 | 1024×768 | 70 Hz | | 8 | 1152×864 | 120 Hz | | 9 | 1152×864 | 100 Hz | | 15 | 1280×720 | 60 Hz | | 18 | 1280×720 | 120 Hz | | 30 | 1280×768 | 144 Hz | | 35 | 1280×800 | 119 Hz | | 40 | 1280×960 | 75 Hz | | 41 | 1280×960 | 60 Hz | | 50 | 1280×1024 | 165 Hz | | 64 | 1366×768 | 120 Hz | | 100 | 1680×1050 | 120 Hz | | 109 | 1920×1080 | 120 Hz | | 110 | 1920×1080 | 100 Hz | | 111 | 1920×1080 | 75 Hz | | 112 | 1920×1080 | 119 Hz | | 113 | 1920×1080 | 165 Hz | --- ## 🛠️ How to Force Resolution To force SimCity to launch in a specific resolution, edit the preferences file and set: OptionScreenSize 110 OptionFullScreen 1 OptionFitToScreen 1 OptionNoWindowBorders 0 ✅ This will launch the game in fullscreen 1920×1080 at 100 Hz. ##📁 File Location (EA App version) The preferences file is located at: C:\Users\<your-username>\AppData\Roaming\SimCity\Preferences Replace <your-username> with your actual Windows account name. ## 🧩 Tips If SimCity resets your settings, mark the file as read-only. You can use Borderless Gaming to simulate fullscreen in windowed mode. If your GPU is not recognized, spoof it in configmanager.txt or update VideoCards.txt. ##💡 Contribute Found more values? Help expand the table! Share your findings with: OptionScreenSize value Resolution and refresh rate GPU and monitor used This helps modern users unlock full graphics potential in SimCity 2013. Unlock_res_SimCity2013.md