diff --git a/Source/Engine/Engine/Engine.Build.cs b/Source/Engine/Engine/Engine.Build.cs
index e7bf85034..85c88024d 100644
--- a/Source/Engine/Engine/Engine.Build.cs
+++ b/Source/Engine/Engine/Engine.Build.cs
@@ -37,6 +37,7 @@ public class Engine : EngineModule
         options.PublicDependencies.Add("Utilities");
         options.PublicDependencies.Add("Visject");
         options.PublicDependencies.Add("Localization");
+        options.PublicDependencies.Add("Online");
 
         // Use source folder per platform group
         switch (options.Platform.Target)
diff --git a/Source/Engine/Online/IOnlinePlatform.h b/Source/Engine/Online/IOnlinePlatform.h
new file mode 100644
index 000000000..6d387021d
--- /dev/null
+++ b/Source/Engine/Online/IOnlinePlatform.h
@@ -0,0 +1,237 @@
+// Copyright (c) 2012-2022 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "Online.h"
+#include "Engine/Core/Types/Span.h"
+#include "Engine/Core/Types/String.h"
+#include "Engine/Core/Types/DateTime.h"
+
+/// <summary>
+/// Online platform user presence common states.
+/// </summary>
+API_ENUM(Namespace="FlaxEngine.Online") enum class OnlinePresenceStates
+{
+    /// <summary>
+    /// User is offline.
+    /// </summary>
+    Offline = 0,
+
+    /// <summary>
+    /// User is online.
+    /// </summary>
+    Online,
+
+    /// <summary>
+    /// User is online but busy.
+    /// </summary>
+    Busy,
+
+    /// <summary>
+    /// User is online but away (no activity for some time).
+    /// </summary>
+    Away,
+};
+
+/// <summary>
+/// Online platform user description.
+/// </summary>
+API_STRUCT(Namespace="FlaxEngine.Online") struct FLAXENGINE_API OnlineUser
+{
+    DECLARE_SCRIPTING_TYPE_MINIMAL(OnlineUser);
+
+    /// <summary>
+    /// Unique player identifier. Specific for a certain online platform.
+    /// </summary>
+    API_FIELD() Guid Id;
+
+    /// <summary>
+    /// The player name.
+    /// </summary>
+    API_FIELD() String Name;
+
+    /// <summary>
+    /// The current player presence state.
+    /// </summary>
+    API_FIELD() OnlinePresenceStates PresenceState;
+};
+
+/// <summary>
+/// Online platform achievement description.
+/// </summary>
+API_STRUCT(Namespace="FlaxEngine.Online") struct FLAXENGINE_API OnlineAchievement
+{
+    DECLARE_SCRIPTING_TYPE_MINIMAL(OnlineAchievement);
+
+    /// <summary>
+    /// Unique achievement identifier. Specific for a certain online platform.
+    /// </summary>
+    API_FIELD() String Identifier;
+
+    /// <summary>
+    /// Achievement name. Specific for a game.
+    /// </summary>
+    API_FIELD() String Name;
+
+    /// <summary>
+    /// The achievement title text.
+    /// </summary>
+    API_FIELD() String Title;
+
+    /// <summary>
+    /// The achievement description text.
+    /// </summary>
+    API_FIELD() String Description;
+
+    /// <summary>
+    /// True if achievement is hidden from user (eg. can see it once it's unlocked).
+    /// </summary>
+    API_FIELD() bool IsHidden = false;
+
+    /// <summary>
+    /// Achievement unlock percentage progress (normalized to 0-100 range).
+    /// </summary>
+    API_FIELD() float Progress = 0.0f;
+
+    /// <summary>
+    /// Date and time at which player unlocked the achievement.
+    /// </summary>
+    API_FIELD() DateTime UnlockTime = DateTime::MinValue();
+};
+
+/// <summary>
+/// Interface for online platform providers for communicating with various multiplayer services such as player info, achievements, game lobby or in-game store.
+/// </summary>
+API_INTERFACE(Namespace="FlaxEngine.Online") class FLAXENGINE_API IOnlinePlatform
+{
+    DECLARE_SCRIPTING_TYPE_MINIMAL(IOnlinePlatform);
+
+    /// <summary>
+    /// Finalizes an instance of the <see cref="IOnlinePlatform"/> class.
+    /// </summary>
+    virtual ~IOnlinePlatform() = default;
+
+    /// <summary>
+    /// Initializes the online platform services.
+    /// </summary>
+    /// <remarks>Called only by Online system.</remarks>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool Initialize() = 0;
+
+    /// <summary>
+    /// Shutdowns the online platform services.
+    /// </summary>
+    /// <remarks>Called only by Online system. Can be used to destroy the object.</remarks>
+    API_FUNCTION() virtual void Deinitialize() = 0;
+
+public:
+    /// <summary>
+    /// Logins the local user into the online platform.
+    /// </summary>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool UserLogin(User* localUser = nullptr) = 0;
+
+    /// <summary>
+    /// Logout the local user from the online platform.
+    /// </summary>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool UserLogout(User* localUser = nullptr) = 0;
+
+    /// <summary>
+    /// Checks if the local user is logged in.
+    /// </summary>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if user is logged, otherwise false.</returns>
+    API_FUNCTION() virtual bool GetUserLoggedIn(User* localUser = nullptr) = 0;
+
+    /// <summary>
+    /// Gets the player from the online platform.
+    /// </summary>
+    /// <param name="user">The local player user info.</param>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool GetUser(API_PARAM(Out) OnlineUser& user, User* localUser = nullptr) = 0;
+
+    /// <summary>
+    /// Gets the list of friends of the user from the online platform.
+    /// </summary>
+    /// <param name="friends">The result local player friends user infos.</param>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool GetFriends(API_PARAM(Out) Array<OnlineUser, HeapAllocation>& friends, User* localUser = nullptr) = 0;
+
+public:
+    /// <summary>
+    /// Gets the list of all achievements for this game.
+    /// </summary>
+    /// <param name="achievements">The result achievements list</param>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool GetAchievements(API_PARAM(Out) Array<OnlineAchievement, HeapAllocation>& achievements, User* localUser = nullptr) = 0;
+
+    /// <summary>
+    /// Unlocks the achievement.
+    /// </summary>
+    /// <param name="name">The achievement name. Specific for a game.</param>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool UnlockAchievement(const StringView& name, User* localUser = nullptr) = 0;
+
+    /// <summary>
+    /// Updates the achievement unlocking progress (in range 0-100).
+    /// </summary>
+    /// <param name="name">The achievement name. Specific for a game.</param>
+    /// <param name="progress">The achievement unlock progress (in range 0-100).</param>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool UnlockAchievementProgress(const StringView& name, float progress, User* localUser = nullptr) = 0;
+
+#if !BUILD_RELEASE
+    /// <summary>
+    /// Resets the all achievements progress for this game.
+    /// </summary>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool ResetAchievements(User* localUser = nullptr) = 0;
+#endif
+
+public:
+    /// <summary>
+    /// Gets the online statistical value.
+    /// </summary>
+    /// <param name="name">The stat name.</param>
+    /// <param name="value">The result value.</param>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool GetStat(const StringView& name, API_PARAM(Out) float& value, User* localUser = nullptr) = 0;
+
+    /// <summary>
+    /// Sets the online statistical value.
+    /// </summary>
+    /// <param name="name">The stat name.</param>
+    /// <param name="value">The value.</param>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool SetStat(const StringView& name, float value, User* localUser = nullptr) = 0;
+
+public:
+    /// <summary>
+    /// Gets the online savegame data. Returns empty if savegame slot is unused.
+    /// </summary>
+    /// <param name="name">The savegame slot name.</param>
+    /// <param name="data">The result data. Empty or null for unused slot name.</param>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool GetSaveGame(const StringView& name, API_PARAM(Out) Array<byte, HeapAllocation>& data, User* localUser = nullptr) = 0;
+
+    /// <summary>
+    /// Sets the online savegame data.
+    /// </summary>
+    /// <param name="name">The savegame slot name.</param>
+    /// <param name="data">The data. Empty or null to delete slot (or mark as unused).</param>
+    /// <param name="localUser">The local user (null if use default one).</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() virtual bool SetSaveGame(const StringView& name, const Span<byte>& data, User* localUser = nullptr) = 0;
+};
diff --git a/Source/Engine/Online/Online.Build.cs b/Source/Engine/Online/Online.Build.cs
new file mode 100644
index 000000000..bb4ff1ba5
--- /dev/null
+++ b/Source/Engine/Online/Online.Build.cs
@@ -0,0 +1,10 @@
+// Copyright (c) 2012-2022 Wojciech Figat. All rights reserved.
+
+using Flax.Build;
+
+/// <summary>
+/// Online services base module.
+/// </summary>
+public class Online : EngineModule
+{
+}
diff --git a/Source/Engine/Online/Online.cpp b/Source/Engine/Online/Online.cpp
new file mode 100644
index 000000000..ca53ed78e
--- /dev/null
+++ b/Source/Engine/Online/Online.cpp
@@ -0,0 +1,51 @@
+// Copyright (c) 2012-2022 Wojciech Figat. All rights reserved.
+
+#include "Online.h"
+#include "IOnlinePlatform.h"
+#include "Engine/Core/Log.h"
+#include "Engine/Engine/EngineService.h"
+#include "Engine/Scripting/ScriptingObject.h"
+
+class OnlineService : public EngineService
+{
+public:
+    OnlineService()
+        : EngineService(TEXT("Online"), 100)
+    {
+    }
+
+    void Dispose() override
+    {
+        // Cleanup current online platform
+        Online::Initialize(nullptr);
+    }
+};
+
+IOnlinePlatform* Online::Platform = nullptr;
+Action Online::PlatformChanged;
+OnlineService OnlineServiceInstance;
+
+bool Online::Initialize(IOnlinePlatform* platform)
+{
+    if (Platform == platform)
+        return false;
+    const auto object = ScriptingObject::FromInterface(platform, IOnlinePlatform::TypeInitializer);
+    LOG(Info, "Changing online platform to {0}", object ? object->ToString() : (platform ? TEXT("?") : TEXT("none")));
+
+    if (Platform)
+    {
+        Platform->Deinitialize();
+    }
+    Platform = platform;
+    if (Platform)
+    {
+        if (Platform->Initialize())
+        {
+            Platform = nullptr;
+            LOG(Error, "Failed to initialize online platform.");
+            return true;
+        }
+    }
+
+    return false;
+}
diff --git a/Source/Engine/Online/Online.h b/Source/Engine/Online/Online.h
new file mode 100644
index 000000000..7d8bdc820
--- /dev/null
+++ b/Source/Engine/Online/Online.h
@@ -0,0 +1,35 @@
+// Copyright (c) 2012-2022 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "Engine/Core/Delegate.h"
+#include "Engine/Scripting/ScriptingType.h"
+
+class IOnlinePlatform;
+
+/// <summary>
+/// The online system for communicating with various multiplayer services such as player info, achievements, game lobby or in-game store.
+/// </summary>
+API_CLASS(Static, Namespace="FlaxEngine.Online") class FLAXENGINE_API Online
+{
+    DECLARE_SCRIPTING_TYPE_NO_SPAWN(Online);
+public:
+    /// <summary>
+    /// The current online platform.
+    /// </summary>
+    API_FIELD(ReadOnly) static IOnlinePlatform* Platform;
+
+    /// <summary>
+    /// Event called when current online platform gets changed.
+    /// </summary>
+    API_EVENT() static Action PlatformChanged;
+
+public:
+    /// <summary>
+    /// Initializes the online system with a given online platform implementation.
+    /// </summary>
+    /// <remarks>Destroys the current platform (in any already in-use).</remarks>
+    /// <param name="platform">The online platform object.</param>
+    /// <returns>True if failed, otherwise false.</returns>
+    API_FUNCTION() static bool Initialize(IOnlinePlatform* platform);
+};