Then the log file really should be there! You need to scroll down after all the 'level' files.
If it is really not there though, run cities.exe directly from file explorer. The game won't start up but do you see any error? Does it make an output log the
Found it:
Initialize engine version: 5.6.7f1 (e80cc3114ac1)
GfxDevice: creating device client; threaded=1
Direct3D:
Version: Direct3D 11.0 [level 11.1]
Renderer: Radeon RX 5500 XT (ID=0x7340)
Vendor: ATI
VRAM: 4055 MB
Driver: 31.0.12027.9001
Begin MonoManager ReloadAssembly
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\UnityEngine.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\UnityEngine.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\Assembly-CSharp-firstpass.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\Assembly-CSharp-firstpass.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\Assembly-CSharp.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\Assembly-CSharp.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\UnityEngine.UI.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\UnityEngine.UI.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\UnityEngine.Networking.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\UnityEngine.Networking.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\ColossalManaged.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\ColossalManaged.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\ICSharpCode.SharpZipLib.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\ICSharpCode.SharpZipLib.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\ICities.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\ICities.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\PopsApiWrapper.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\PopsApiWrapper.dll into Unity Child Domain
- Completed reload, in 1.240 seconds
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\System.Core.dll (this message is harmless)
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Cities_Skylines\Cities_Data\Managed\System.dll (this message is harmless)
<RI> Initializing input.
<RI> Input initialized.
desktop: 1920x1080 59Hz; virtual: 5520x1082 at -1920,0
<RI> Initialized touch support.
UnloadTime: 1.423900 ms
Game mode
(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)
Unloading 4 Unused Serialized files (Serialized files now loaded: 0)
UnloadTime: 0.388200 ms
Machine ID: 86f1554a25b06f9f0eff80b6cb748ab07b8ee7fd
Model: B450M-HDV R4.0 (To Be Filled By O.E.M.)
OS: Windows 10 (10.0.0) 64bit
Language: English
CPU: AMD Ryzen 5 2600 Six-Core Processor (12 core(s))
System Memory: 65457
Gfx Device: Radeon RX 5500 XT
Gfx Version: Direct3D 11.0 [level 11.1]
Gfx Memory: 4055
Gfx Shader Model: 50
Game Version: 1.17.0-f3-steam-win
(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)
ColossalFramework.PlatformServices.PlatformServiceNotRunningException: Platform service is not running. (Steam-Steam)
(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)
Unloading 3 unused Assets to reduce memory usage. Loaded Objects now: 1945.
Total: 1.872500 ms (FindLiveObjects: 0.151800 ms CreateObjectMapping: 0.047800 ms MarkObjects: 1.662400 ms DeleteObjects: 0.009500 ms)
Setting up 6 worker threads for Enlighten.
Thread -> id: 6978 -> priority: 1
Thread -> id: 693c -> priority: 1
Thread -> id: 3bcc -> priority: 1
Thread -> id: 6794 -> priority: 1
Thread -> id: 2010 -> priority: 1
Thread -> id: 651c -> priority: 1