Yes. You can use the same social account to access the game simultaneously on Steam and another platform (PC, iOS, or Android).

Example:

1. Log in to the Steam server through the Steam client

- Login email (Google): legendofymir@gmail.com

2. Log in to a different server through another platform (PC, iOS, or Android)

- Login email (Google): legendofymir@gmail.com

* Please note that simultaneous login is not available if you select the same region/server.

In other words, simultaneous access is possible with the same account as long as you are connecting to different servers.