Ankos

Nice selection. I really like the Megaman glitches. Have you heard of the Iceman stage glitch from Megaman 1? If you jump and rapidly change directions on a certain part of the stage it seems to have a bunch of weird effects (though it's unpredictable)

Fun fact about Super Donkey Kong 2: It was published by the same company that published Rockman 8 and Sonic Adventure 8 that you showed off earlier. They're called Ka Sheng (卡聖)

Cool stuff

The story behind the multiple versions of Rockman DX3 is sort of interesting. The version you have is by a company called Winsen. They were able to edit out the copy protection many Taiwanese games had, so they were able to make pirate carts of games a lot sooner than most other manufacturers. They also did their own releases for Zook Z in both Japanese and English. These were called Rockman DX6 and Rockman DX8

The other Rockman DX3 was by Kongfeng (the company who made those backlit "GB Boy Colour" clones). They were the official publisher for Vast Fame in Mainland China. Unfortunately they used what appear to be early builds of games sometimes, which is why you get stuff like Zook Z music in Rockman DX3. Sometimes they used the original Taiwan boards for those carts though