Here's a long lost Boulder Dash hack with all new graphics and level layouts, Schwa put a lot of love into this hack for all people to enjoy. Collect all the gems in all new scenarios, collect the gems from beginning to end, collect 'em!
Database match: Boulder Dash (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
File SHA-1: 45220F3A088E154A9531E8E2B17583AD5E9B35D6
File CRC32: 8F1536
ROM SHA-1: A856DB911542DC835DB7CE67DAD3E159BD7A637F
ROM CRC32: A8F4D99E