When building to UWP platform, editor throws an error in the console:
UnityException: Failed to run assembly converter with command -metadata=0 -platform=uap -lock="UWP\project.lock.json" [ ..... ]

Reproducible on 5.2, 5.3, 5.4.

Repro steps:
1. open "Words.zip" project;
2. build to UWP;
3. observe an error in the console;

Worth trying to build WSA platform. Getting different errors:

Reference Rewriter found some errors while running with command --target="Temp\StagingArea\Assembly-CSharp.dll" --additionalreferences="Temp\StagingArea" --platform="C:\Program Files (x86)\Windows Kits\8.1\References\CommonConfiguration\Neutral\Windows.winmd" --support="Temp\StagingArea\WinRTLegacy.dll" --supportpartialns=Unity.Partial --system=System --dbg=pdb --framework="C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETCore\v4.5.1" --alt=System.Xml.Serialization --ignore=System.IConvertible,mscorlib.
Error: method `System.Void System.Collections.Generic.List`1<Gamelogic.Grids.CairoPoint>::ForEach(System.Action`1<!0>)` doesn't exist in target framework. It is referenced from Assembly-CSharp.dll at System.Void Gamelogic.Grids.Examples.LightsOutCairo::InitGame().
Error: method `System.Void System.Collections.Generic.List`1<Gamelogic.Grids.FlatTriPoint>::ForEach(System.Action`1<!0>)` doesn't exist in target framework. It is referenced from Assembly-CSharp.dll at System.Void Gamelogic.Grids.Examples.LightsOutTri::InitGame().