Ultra hardcore mode in which Mario goes into this hellish difficulty hack for this classic

-Ultra speeded up enemies
-Almost all palletes changed
-A few new graphics added
-Title and title theme changed

Mario Bros. (U) [!].nes
CRC32 	a6de1b55
MD5 	8d8e0b86dd870302bf4a994e76c55c83
SHA-1 	9286a2db471d51713e9b75e68b47ffbf11e2d40b
SHA-256 	2810051c21132abd8b9b1e1bf741b302ee6c1d4af983e0df7fe50bd05ac0a5c8

Mario Bros (JU).nes
MD5	d85e4dbfb52687c83915ac3e4cc08bbb
SHA-1 	3de299058d7ddced4c43a14a9898150f2467a756
SHA-256 	e56643baf429c03bc0577129bd9a459647ded725bddf06ff53139fd3fcf0171c