Possible null reference return.

Non-nullable property 'Game' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Support for 'async void' unit tests is being removed from xUnit.net v3. To simplify upgrading, convert the test to 'async Task' instead. (https://xunit.net/xunit.analyzers/rules/xUnit1048)

Comparing an instance of System.Collections.Generic.List<EawModinfo.Spec.ILanguageInfo> with an instance of System.Collections.Generic.ISet<EawModinfo.Spec.ILanguageInfo> has undefined results, because the order of items in the set is not predictable. Create a stable order for the set (i.e., by using OrderBy from Linq). (https://xunit.net/xunit.analyzers/rules/xUnit2027)