Here is a full level hack for Duck Tales 2 for the NES. In size they surpass the original, sometimes even at 2 to 5 times!
New puzzles, squeezed from the engine to the Max.
New arenas with the bosses which complicates your life.
Changed all replica nephews. Without talking to them, you risk to lose or not advance further. All levels have their strategic advantage!
Also changed the ending.
The hack is in Russian language at the moment.
DuckTales 2 (USA).nes - NOINTRO
CRC32: 40CE2FC0
MD5: EE092394B1E64B8BEE7CA54C3DC7FAAD
SHA-1: 76093EA07A16FDAA8AA58730FD29B4977A264B5E
SHA-256: 6400B8DEDBB6273F5EA01B68C61453F7CF5CAB64EA2A0F57D4D31DD4B983187B