Super Mario Bros 2 Painful World Spikes Kaizo is a very complex hack of the plot of the beta testing game Super Mario Bros 2 developed by Mario2005. There is a good level design here. Spikes and lots of enemies & bosses.
Database match: Super_Mario_Bros_2_U__PRG0___33
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: 7DF0F595B074F587C6A1D8F47E031F045D540DAE
File CRC32: 7D3F6F3D
ROM SHA-1: CC925623D0836F4FE67F9696E9990449AE3914A7
ROM CRC32: 494769D2