When I dumped & emulated the last set of Makon/NT stuff, there were 2 remaining games that I knew to be both on this mapper and undumped, and at the time I didn't have access to either of them. But thanks to the generosity of 2 people plus a fortuitous eBay find, I ended up getting hold of them 3 different ways. which was very cool!
(Note that you'll probably need hhugboy v1.2.1 to play the raw dumps of any of these carts, but they will work in v1.2 if you manually set 'unlicensed compatibility mode' to 'NT KL type 2')
So first off, I'll start with the single carts. These came complete with box and manual from an eBay seller called beauauto, who amazingly got hold of a big ass box of brand new carts from a warehouse - currently they're selling them off for $30 each if you want to get a piece of this action.
They're all functional rumble carts, and accordingly all of these games support rumble, albeit in the half-hearted sort of way you usually see from Makon games.
Megaman X4 / Rockman X4
So, first game! Megaman X4! What could this be?
If your answer was "Rockman 8, badly colourised, with a different intro and the levels rearranged" .. you've probably played a Makon "update" before.
This version of course does not fix the bug from Rockman 8 where essential moving platforms disappear partway through the level if you kill too many enemies.
But hey, good news, at least I was able to hack this to MBC5 so you can play it on anything.
Sonic Adventure 8
Coming hot on the heels of Sonic 3D Blast 5 and Sonic Adventure 7, it is of course..
Another rearrangement with bad colours! Literally not much more to say than that!
(Update: you might need to turn off "halt on invalid opcode" in hhugboy since there seems to be a certain enemy in one of the stages that can trigger one)
Donkey Kong 5 (again)
I already dumped this one previously, but since it came in a set with the other two games, I took the opportunity to redump it, on the off-chance it was a different variant or something. And it turned out it was different by a few bytes; not sure what the differences are, if anything significant at all.
But having also extracted the game from one of the below multicarts and found it to match this version, I've reclassified the other as an 'alternate' dump; I did redump the other cart multiple times to confirm I was getting a good read, and the dumps were always consistent, but it's possible there's something wrong with the cart and that the other dump is therefore bad. So for now I'd say you can consider this new dump to be the 'canonical' dump of this fine game.
As standard for Makon/NT releases, several multicarts were issued containing these games. These first two were lent to me by max6464646464 - thanks!
They're titled 彩色格鬥24in1電腦畫面選GAME and 彩色格鬥29in1電腦畫面選GAME in Chinese, which translates roughly to "Colour Fighting X in 1 Computer Screen Selection Game". Seems a little bit weird since these carts have no fighting games, but hey.
(Also you can tell NT is from the old school of multicart makers because they're still treating an on-screen menu like a futuristic novelty to be boasted about and not something everyone had been doing for about 8 years already)
The 24 in 1 has Donkey Kong 5 and Sonic 8, the 29 in 1 has Rockman X4 and Sonic 8. Both carts then also have a set of minimally-colourised regular GB games, in the style of the previously-dumped multis.
Also, both say "NEW GB RUMBLE" on the menu, and have "Rumble" in Chinese by the Makon games' names... almost as if these are non-rumble versions of carts designed with rumble functionality WELL
Thanks to Pepper9801 for lending this one! This is exactly the same as the 29 in 1 above, but with rumble in place.
Here are the multicart ROMs, all work in hhugboy only:
Both 29 in 1s are straight up identical BUT I've put them up here as separately named ROMs because of reasons