Escaping the Google Play Games Walled Garden

Authentication is the foundation of everything that happens after a player launches your game.

It determines who the player is, where they can play, and what progress, purchases, and entitlements follow them across devices, platforms, and games. Without reliable authentication, features like cloud saves, cross-progression, cross-commerce, player support, and long-term relationships simply do not scale.

For years, the industry has accepted that authentication is “solved” as long as players can sign in on a single platform. But in a world where players expect to move freely between PC, console, and mobile, that assumption breaks down quickly.

At LootLocker, we believe authentication should be portable, connectable, and platform-agnostic and not a dead end. That's why we built Unified Player Accounts. But there was always one platform that evaded us: Google Play Games.

Why Google Has More Than One Authentication Type

First, a quick recap. Google is a particularly interesting case because it offers two fundamentally different authentication models:

Sign in with Google

This is a traditional account-based authentication flow where players authenticate using an email-based Google account that can, in theory, be used across devices and platforms.

Google Play Games

Google Play Games authentication is device- and platform-native. It is deeply integrated into the Android ecosystem and designed to provide a seamless, zero-friction login experience for mobile players.

Both systems serve valid purposes, but they are built on very different assumptions.

Why This Is Hard (And Why No One Has Solved It Properly)

Here’s the crux of the problem: Sign in with Google creates an account that can be reused elsewhere, whereas Google Play Games authentication does not.

Google Play Games is intentionally designed as a platform-bound identity, living only on your Android device. It does not expose the necessary APIs to authenticate remotely and be reused or accessible outside the Android ecosystem. The latter being a necessary feature required when connecting it to other platform identities.

As a result, a player who starts a game using Google Play Games authentication is effectively locked to that platform. No cloud saves, cross-progression or seamless transition to PC or console.

This runs directly counter to how LootLocker’s Unified Player Accounts (UPA) system works. Our UPA system is built on a simple but strict principle: any authentication method that participates in a unified account must be remotely verifiable and connectable to other identities through the backend.

Until now, Google Play Games did not meet that requirement.

How We Actually Solved It

Rather than trying to force Google Play Games to behave like a fully portable identity (which it is not), we approached the problem from a different angle.

Google already has an overarching account system: Sign in with Google. Google Play Games identities ultimately sit under that umbrella, they’re just not exposed in a way developers can normally leverage across platforms.

So what we do is look up the player’s Sign in with Google identity and automatically create a corresponding Google Play Games connected account (if one doesn't exist). Next, we merge both identities into a single Unified Player Account in LootLocker, and voila it works!

And this works both ways. So if a player starts with Google Play Games, we automatically create and connect the corresponding Sign in with Google account to that profile.

From the developer’s and player’s perspective, this results in one merged player identity, even though two Google authentication methods are involved behind the scenes.

What This Means in Practice

The player still gets the native, automatic Google Play Games login experience on Android. No manual account linking or external account creation needed.

And crucially, that unified account can now be safely connected to other platforms through LootLocker’s Unified Player Accounts system, enabling cloud saves, cross-progression, and cross-device play in a way that was previously not possible with Google Play Games alone.

We’re not bypassing Google’s constraints. We’re working with their identity model and connecting the pieces in a way that finally makes Google Play Games compatible with a modern, cross-platform publishing strategy.

Real-World Use Cases

With this feature, entirely new player journeys become possible:

• A player starts playing on Android, automatically authenticated with Google Play Games
• Later, they launch the same game on Steam and seamlessly continue where they left off by linking their Google (and by extension Google Play Games) account to their Steam account via UPA

And it works in reverse:

• A player starts playing on Steam or console
• Later, they launch the same game on Android and continue where they left off by linking their Steam (or console) account to their Google Play Games account via UPA

No email prompts. No password fatigue. No “this progress belongs to another device” problems.

How to Use It

Getting started is straightforward:

1. Enable Google Play Games and Sign in with Google authentication in the LootLocker Web Console
2. Follow the Unified Player Accounts documentation to configure Sign in with Google and Google Play Games
3. Ship your game

LootLocker handles the rest.

Breaking Down the Last Wall

This isn’t just a technical achievement, it’s a philosophical one. Cross-platform should not be a premium feature. It should be the default.

By unlocking Google Play Games authentication beyond Android, we’re taking another step toward a future where platforms are marketplaces, not prisons, and where players are free to play wherever they want.