Добавьте файлы проекта.

Services/Games/Extentions/ServiceCollectionExtentions.cs

@@ -0,0 +1,14 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+using Services.Tickets.Extentions;
+
+namespace Services.Games.Extentions;
+
+public static class ServiceCollectionExtentions
+{
+    public static void TyAddGamesService(this IServiceCollection services)
+    {
+        services.TyAddTicketService();
+        services.TryAddScoped<IGameService, GameService>();
+    }
+}