Or there's another option. The tool is called Puyo_Tools. It can decompress an entire directory. Just give me a second to track down the tool.
EDIT: Here it is. Puyo_Tools
[spoiler=How to Use]
Open up puyo_tools.exe.
Click Compression> Decompress> Select Directory.
Locate the folder where all of the Bomberman Blast files are.
If You want to decompress everything then just select that folder and hit OK, or else select a folder within the main folder.
A window will popup that says "Include Files from sub directory", click Yes.
In the new window make sure the top two options are selected and none of the others are.
Press "Decompress" and everything should work in Brres Viewer.
[/spoiler]
EDIT: Here it is. Puyo_Tools
[spoiler=How to Use]
Open up puyo_tools.exe.
Click Compression> Decompress> Select Directory.
Locate the folder where all of the Bomberman Blast files are.
If You want to decompress everything then just select that folder and hit OK, or else select a folder within the main folder.
A window will popup that says "Include Files from sub directory", click Yes.
In the new window make sure the top two options are selected and none of the others are.
Press "Decompress" and everything should work in Brres Viewer.
[/spoiler]