あなたのモバイルデバイスにSTEAMを
New! Steam Guard Mobile Authenticator
Get the best level of Steam account protection with the mobile app.

Use the app to enable your phone as a Steam Guard Mobile Authenticator to verify your identity. The authenticator generates a code that you need to enter every time that you log on to your Steam account. The code changes every 30 seconds, can be used only once, and is unguessable. Read more in the FAQ.

フレンドと交流

携帯に Steam をダウンロードすれば、外出先から最も簡単に Steam フレンド間のトレンドについてくことができます。

STEAM で購入

豊富な品揃えの Steam であなたの携帯電話からPC&Mac対応のゲームを探そう。セールを逃すことはもうありません。

Remotely download

Remotely download and install your purchases straight to your PC at home.

Steam Guard

Enable your phone as a Steam Guard Mobile Authenticator for the best level of Steam account security.

Don't have a smart phone?

You can still add a phone number to your Steam account for additional security. This will help you recover your account or reset your password in the future.

Read the FAQ

What happens if I lose my phone? What happens if I get a new phone? Read the full FAQ here.