Boulder Dash（R） is a registered trademark of BBG Entertainment GmbH. Boulder Dash（R）-30 Anniversary , the names and likenesses of Rockford , Crystal and Goldford are trademarks of BBG Entertainment GmbH. Boulder Dash（R）-30 Anniversary Copyright （C）1984-2017 BBG Entertainment GmbH. All rights reserved. The original Boulder Dash（R） was created by Peter Liepa with Chris Gray.