Radioactive Press has an updated version of Giant Monster Rampage Deluxe now available over on Wargame Vault.
From the announcement:
Giant Monster Rampage Deluxe has been updated with a new cover and new material!
You can find the 127 page updated rulebook at Wargame Vault for only $9.99!
We will also be releasing a print edition of GMR Deluxe in a few weeks. We will post more information about where you can get your print copy once they are available.