You can download YuGiOh Bam Pocket here!
Your phone has to be rooted for this to work though.
This method uses Titanium backup to add the obb data.
How to Install:
Step 1: Download the zip
Step 2: Download Titanium Backup on the Play Store
Step 3: Extract the zip into the "TitaniumBackup" folder created by
Titanium Backup after first use.
Step 4: Restore Backup with Titanium Backup
(Install game, restore data)
And lastly: Enjoy the game :)
The ZIP contains:
1. The game installation file itself.
2. The games property file.
3. The obb data to play without the need of the Server.
Titanium Backup will install all this for you.