diff --git a/PG.Commons/PG.Commons/Repository/IRepository.cs b/PG.Commons/PG.Commons/Repository/IRepository.cs
new file mode 100644
index 00000000..1a2d01d3
--- /dev/null
+++ b/PG.Commons/PG.Commons/Repository/IRepository.cs
@@ -0,0 +1,45 @@
+// Copyright (c) Alamo Engine Tools and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for details.
+
+using PG.Commons.Validation;
+
+namespace PG.Commons.Repository;
+
+/// <summary>
+///     Base contract for a object storage repository.
+/// </summary>
+/// <typeparam name="TKey">The key to access values.</typeparam>
+/// <typeparam name="TValue">The value.</typeparam>
+public interface IRepository<in TKey, TValue> : IValidatable where TValue : IValidatable
+{
+    /// <summary>
+    ///     Tries to insert an object into the repository.
+    /// </summary>
+    /// <param name="key">The object's key.</param>
+    /// <param name="value">the object</param>
+    /// <returns>True if the insert succeeded, false else.</returns>
+    bool TryCreate(TKey key, TValue value);
+
+    /// <summary>
+    ///     Tries to load the value for a given key.
+    /// </summary>
+    /// <param name="key">The key.</param>
+    /// <param name="value">The object to load.</param>
+    /// <returns>True if the read succeeded, false else.</returns>
+    bool TryRead(TKey key, out TValue? value);
+
+    /// <summary>
+    ///     Tries to update the value for a given key.
+    /// </summary>
+    /// <param name="key">The key.</param>
+    /// <param name="value">The object to load.</param>
+    /// <returns>True if the update succeeded, false else.</returns>
+    bool TryUpdate(TKey key, TValue value);
+
+    /// <summary>
+    ///     Tries to delete a given object from the repository.
+    /// </summary>
+    /// <param name="key">The key.</param>
+    /// <returns>True if the delete succeeded, false else.</returns>
+    bool TryDelete(TKey key);
+}
\ No newline at end of file
diff --git a/PG.Commons/PG.Commons/Repository/RepositoryBase.cs b/PG.Commons/PG.Commons/Repository/RepositoryBase.cs
new file mode 100644
index 00000000..1706dd54
--- /dev/null
+++ b/PG.Commons/PG.Commons/Repository/RepositoryBase.cs
@@ -0,0 +1,127 @@
+// Copyright (c) Alamo Engine Tools and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for details.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using FluentValidation.Results;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Logging.Abstractions;
+using PG.Commons.Validation;
+
+namespace PG.Commons.Repository;
+
+/// <inheritdoc />
+public abstract class RepositoryBase<TKey, TValue> : IRepository<TKey, TValue>
+    where TKey : notnull
+    where TValue :
+    IValidatable
+{
+    /// <summary>
+    ///     .ctor
+    /// </summary>
+    /// <param name="services"></param>
+    protected RepositoryBase(IServiceProvider services)
+    {
+        Logger = services.GetService<ILoggerFactory>()?.CreateLogger(GetType()) ?? NullLogger.Instance;
+    }
+
+    /// <summary>
+    ///     The internal Dictionary.
+    /// </summary>
+    protected readonly Dictionary<TKey, TValue> InternalRepository = new();
+
+    /// <inheritdoc cref="ILogger{TCategoryName}" />
+    protected readonly ILogger Logger;
+
+    /// <inheritdoc />
+    public ValidationResult Validate()
+    {
+        var errors = new List<ValidationFailure>();
+        foreach (var validationFailures in InternalRepository.Values.Select(v => v.Validate().Errors))
+        {
+            errors.AddRange(validationFailures);
+        }
+
+        return new ValidationResult(errors);
+    }
+
+    /// <inheritdoc />
+    public void ValidateAndThrow()
+    {
+        foreach (var v in InternalRepository.Values)
+        {
+            v.ValidateAndThrow();
+        }
+    }
+
+    /// <inheritdoc />
+    public bool TryCreate(TKey key, TValue value)
+    {
+        if (InternalRepository.ContainsKey(key))
+        {
+            Logger.LogInformation(
+                "The repository already has a value set for the key={key}. The value could not be inserted.", key);
+            return false;
+        }
+
+        var validationResult = value.Validate();
+        if (!validationResult.IsValid)
+        {
+            Logger.LogWarning("The provided value {value} is invalid. Validation result: {validationResult}", value,
+                validationResult);
+            return false;
+        }
+
+        InternalRepository.Add(key, value);
+        return true;
+    }
+
+    /// <inheritdoc />
+    public bool TryRead(TKey key, out TValue? value)
+    {
+        if (!InternalRepository.ContainsKey(key))
+        {
+            Logger.LogInformation("There is no object with key={key} in repository.", key);
+            value = default;
+            return false;
+        }
+
+        value = InternalRepository[key];
+        return true;
+    }
+
+    /// <inheritdoc />
+    public bool TryUpdate(TKey key, TValue value)
+    {
+        if (!InternalRepository.ContainsKey(key))
+        {
+            Logger.LogInformation("There is no object with key={key} in repository.", key);
+            return false;
+        }
+
+        var validationResult = value.Validate();
+        if (!validationResult.IsValid)
+        {
+            Logger.LogWarning("The provided value {value} is invalid. Validation result: {validationResult}", value,
+                validationResult);
+            return false;
+        }
+
+        InternalRepository[key] = value;
+        return true;
+    }
+
+    /// <inheritdoc />
+    public bool TryDelete(TKey key)
+    {
+        if (!InternalRepository.ContainsKey(key))
+        {
+            Logger.LogInformation("There is no object with key={key} in repository.", key);
+            return false;
+        }
+
+        return InternalRepository.Remove(key);
+    }
+}
\ No newline at end of file
diff --git a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Attributes/DefaultLanguageAttribute.cs b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Attributes/DefaultLanguageAttribute.cs
index 0f7b6bd5..8c609657 100644
--- a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Attributes/DefaultLanguageAttribute.cs
+++ b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Attributes/DefaultLanguageAttribute.cs
@@ -10,7 +10,7 @@ namespace PG.StarWarsGame.Localisation.Attributes;
 ///     <see cref="Attribute" /> that can be used to mark a <see cref="IAlamoLanguageDefinition" /> as the default
 ///     language.
 /// </summary>
-public class DefaultLanguageAttribute : Attribute
+public sealed class DefaultLanguageAttribute : Attribute
 {
     /// <summary>
     ///     Is set to true, if the language is a default.
diff --git a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/LocalisationDomain.cs b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/LocalisationDomain.cs
index e8276d93..d7ea4f8b 100644
--- a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/LocalisationDomain.cs
+++ b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/LocalisationDomain.cs
@@ -2,7 +2,6 @@
 // Licensed under the MIT license. See LICENSE file in the project root for details.
 
 using Microsoft.Extensions.DependencyInjection;
-using PG.StarWarsGame.Files.DAT;
 using PG.StarWarsGame.Localisation.Commons.Helper;
 
 namespace PG.StarWarsGame.Localisation;
@@ -18,7 +17,7 @@ public static class LocalisationDomain
     /// <param name="serviceCollection">The service collection to populate.</param>
     public static void RegisterServices(IServiceCollection serviceCollection)
     {
-        DatDomain.RegisterServices(serviceCollection);
+        PG.StarWarsGame.Files.DAT.DatDomain.RegisterServices(serviceCollection);
         serviceCollection
             .AddSingleton<IAlamoLanguageDefinitionHelper>(sp => new AlamoLanguageDefinitionHelper(sp))
             ;
diff --git a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation.csproj b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation.csproj
index 611edd87..93f4c1c9 100644
--- a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation.csproj
+++ b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation.csproj
@@ -12,6 +12,10 @@
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <InheritDocEnabled>true</InheritDocEnabled>
     </PropertyGroup>
+    <PropertyGroup>
+        <CompilerGeneratedFilesOutputPath>$(BaseIntermediateOutputPath)Generated</CompilerGeneratedFilesOutputPath>
+        <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.0-preview.6.23329.7"/>
         <PackageReference Include="System.IO.Abstractions" Version="19.2.51"/>
diff --git a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/ITranslationItem.cs b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/ITranslationItem.cs
new file mode 100644
index 00000000..18a7a24c
--- /dev/null
+++ b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/ITranslationItem.cs
@@ -0,0 +1,22 @@
+// Copyright (c) Alamo Engine Tools and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for details.
+
+using PG.Commons.Validation;
+
+namespace PG.StarWarsGame.Localisation.Repository;
+
+/// <summary>
+///     A simple translation item.
+/// </summary>
+public interface ITranslationItem : IValidatable
+{
+    /// <summary>
+    ///     The item's key.
+    /// </summary>
+    string Key { get; }
+
+    /// <summary>
+    ///     The item's value.
+    /// </summary>
+    string Value { get; }
+}
\ No newline at end of file
diff --git a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/ITranslationItemRepository.cs b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/ITranslationItemRepository.cs
new file mode 100644
index 00000000..6d5c1af3
--- /dev/null
+++ b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/ITranslationItemRepository.cs
@@ -0,0 +1,14 @@
+// Copyright (c) Alamo Engine Tools and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for details.
+
+using PG.Commons.Repository;
+using PG.StarWarsGame.Localisation.Languages;
+
+namespace PG.StarWarsGame.Localisation.Repository;
+
+/// <summary>
+///     A repository to hold <see cref="ITranslationItem" />s.
+/// </summary>
+public interface ITranslationItemRepository : IRepository<IAlamoLanguageDefinition, ITranslationItem>
+{
+}
\ No newline at end of file
diff --git a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/ITranslationRepository.cs b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/ITranslationRepository.cs
new file mode 100644
index 00000000..5b340e96
--- /dev/null
+++ b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/ITranslationRepository.cs
@@ -0,0 +1,13 @@
+// Copyright (c) Alamo Engine Tools and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for details.
+
+using PG.Commons.Repository;
+
+namespace PG.StarWarsGame.Localisation.Repository;
+
+/// <summary>
+///     Repository for sorted localisations.
+/// </summary>
+public interface ITranslationRepository : IRepository<string, ITranslationItemRepository>
+{
+}
\ No newline at end of file
diff --git a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/TranslationItem.cs b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/TranslationItem.cs
new file mode 100644
index 00000000..4b4b8030
--- /dev/null
+++ b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/TranslationItem.cs
@@ -0,0 +1,67 @@
+// Copyright (c) Alamo Engine Tools and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for details.
+
+using System;
+using FluentValidation;
+using FluentValidation.Results;
+
+namespace PG.StarWarsGame.Localisation.Repository;
+
+/// <inheritdoc cref="ITranslationItem" />
+public sealed class TranslationItem : ITranslationItem
+{
+    internal TranslationItem()
+    {
+    }
+
+    /// <summary>
+    ///     .ctor
+    /// </summary>
+    /// <param name="key">The string key.</param>
+    /// <param name="value">The translated text.</param>
+    /// <exception cref="ArgumentNullException"></exception>
+    internal TranslationItem(string key, string value)
+    {
+        if (string.IsNullOrWhiteSpace(key))
+        {
+            throw new ArgumentNullException(nameof(key));
+        }
+
+        if (string.IsNullOrWhiteSpace(value))
+        {
+            throw new ArgumentNullException(nameof(value));
+        }
+
+        Key = key ?? throw new ArgumentNullException(nameof(key));
+        Value = value ?? throw new ArgumentNullException(nameof(value));
+    }
+
+
+    /// <inheritdoc />
+    public string Key { get; private set; } = null!;
+
+    /// <inheritdoc />
+    public string Value { get; private set; } = null!;
+
+    /// <inheritdoc />
+    public ValidationResult Validate()
+    {
+        return new TranslationItemValidator().Validate(this);
+    }
+
+    /// <inheritdoc />
+    public void ValidateAndThrow()
+    {
+        new TranslationItemValidator().ValidateAndThrow(this);
+    }
+
+    /// <inheritdoc />
+    private class TranslationItemValidator : AbstractValidator<TranslationItem>
+    {
+        internal TranslationItemValidator()
+        {
+            RuleFor(i => i.Key).NotNull().NotEmpty();
+            RuleFor(i => i.Value).NotNull().NotEmpty();
+        }
+    }
+}
\ No newline at end of file
diff --git a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/TranslationItemRepository.cs b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/TranslationItemRepository.cs
new file mode 100644
index 00000000..b01ed9db
--- /dev/null
+++ b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/TranslationItemRepository.cs
@@ -0,0 +1,18 @@
+// Copyright (c) Alamo Engine Tools and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for details.
+
+using System;
+using PG.Commons.Repository;
+using PG.StarWarsGame.Localisation.Languages;
+
+namespace PG.StarWarsGame.Localisation.Repository;
+
+/// <inheritdoc cref="ITranslationItemRepository" />
+internal sealed class TranslationItemRepository : RepositoryBase<IAlamoLanguageDefinition, ITranslationItem>,
+    ITranslationItemRepository
+{
+    /// <inheritdoc />
+    public TranslationItemRepository(IServiceProvider services) : base(services)
+    {
+    }
+}
\ No newline at end of file
diff --git a/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/TranslationRepository.cs b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/TranslationRepository.cs
new file mode 100644
index 00000000..0a1ca95e
--- /dev/null
+++ b/PG.StarWarsGame.Localisation/PG.StarWarsGame.Localisation/Repository/TranslationRepository.cs
@@ -0,0 +1,15 @@
+// Copyright (c) Alamo Engine Tools and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for details.
+
+using System;
+using PG.Commons.Repository;
+
+namespace PG.StarWarsGame.Localisation.Repository;
+
+internal sealed class TranslationRepository : RepositoryBase<string, ITranslationItemRepository>, ITranslationRepository
+{
+    /// <inheritdoc />
+    public TranslationRepository(IServiceProvider services) : base(services)
+    {
+    }
+}
\ No newline at end of file