Mega bombs are just like big bombs, only more mega. Their damage radius is about twice as large (roughly 15 blocks).
How to Obtain
This bomb can be crafted or traded.
How to Use
Like all bombs, this bomb can only be placed a short distance away. This is to prevent people with very high building skill level from having an unfair advantage over players who can't place items as far away.
Mega bombs will damage or kill mobs and players, and will also damage or destroy blocks. Unlike other bombs, there is no protection from a mega bomb. It will destroy everything within its radius, including reinforced metal blocks.