Here is a decoded copy of the recently dumped "Danz Kara" plug & play by Game Star, alongside extracts of some of its games. The decoding process was relatively simple for the console itself; though some of the "educational computer"-based software contains further encryption (alongside strange compression [?] for two games' CHR data), so I was not able to extract every single game.

This console is a bizarre mishmash of various developers' games, to a level where I can barely even comprehend where some of its contents were sourced from. Of particular note is that two games, Runner and Mole, are originally-developed games by Inventor, which have not surfaced on any other console. The copyright notices were removed in both, so I have included guesswork restorations below. Oddly, the Runner notice was covered up by coding in a row of blank tiles to mask the original notice; so I just zeroed-out that code to display the Inventor credit. Due to the aforementioned CHR issue, Runner has been given an 8K CHR file; I am unsure if this is the intended code structure, but it seems to run fine.

Note that the Smart Millionaire game has a tendency to crash on certain questions; the MAME team states that this is just how the game plays (great quality control), and is not an emulation/dumping issue.

Some context surrounding the VT03 hacks on the discussed VT32 consoles, since I'm unsure if it's been explained here. Prior to the common 2010s VT03 and VT32 consoles, there was a separate set of Nice Code-based VT03 ports that were published by Shenzhen Niutai (as evident by their generic "© ALL RIGHTS RESERVED" string, among other factors). Notable releases featuring the Niutai variants include the "151-in-1 Games" console by Qi Sheng Long (which I do have, but it's been buried in storage for years), and the "G-Factor" Famiclone cartridges. For whatever reason, a handful of the Niutai hacks were added to VT32 handhelds beginning in 2022; though most VT32 consoles did feature a sole Niutai hack before this (Deformable, with its "copyright notice" removed).

In being able to compare the code directly, it's quite clear that Niutai's VT03 port of Forest Kid was the basis for the more common "Kong King" hack. The coding layout and some graphics are virtually identical, with Kong King reformatting one area to reduce its file size. As to why Nice Code licensed to Niutai first, and did their own in-house (?) VT03 set later, I have no idea; but I do feel it's important to note that, at least in some cases, Niutai's versions came first.

Images of the 151-in-1 game set can be seen in an old download posted by taizou (based on a rebranded console by Overmax): http://bootleg.games/BGC_Forum/index.php?topic=321 Do note that the console has a mixture of games from Qi Sheng Long, Power Joy and the like (and switches over to the newer VT03 set by game 63), so not everything on it is Niutai.

Here is an incomplete attempt of analyzing the encryption seen in recent VT32 systems, namely the My Arcade Tetris systems and the "Retro Racer" 30-in-1 by Orb. I'm at a loss as to what could be done further, so any assistance with interpreting the code and/or ripping the remaining games would be appreciated.

The .zip file below features the code analysis in its .txt file, as well as various extracted ROM examples. I have also separately attached three games which were not dumped previously, two of which were successfully decoded.

Here are the Space Invaders and Galaga Pocket Player Pro extracts. Space Invaders also features the unused Galaxian code as padding; annoyingly, it faces 180 degrees opposite of the others in orientation. The Galaga system does actually use Galaxian as a selectable game, but it's a different revision in code. The Galaga port is genuinely very impressive here; if I didn't know any better, I would think it was arcade emulation with cruddy sound.

Here is an assortment of extracts from the Retro-Bit "Go Retro Portable". I mainly wanted to rip some of the more notable Nice Code variants that I couldn't previously restore by hand; though I've also ripped the Shiru Tetris port (which differs from the My Arcade release) and two unused games, Mega Man and Gargoyle's Quest II. There aren't many mapper hacks included on this console (from what I could tell), though Thunderbolt Fighting Plane is converted to mapper 256; so I've included that ROM as well.

There seemed to be some confusion as to if this hack was dumped, so I've attached an extract of it here (sourced from the "Game 500-in-1" ROM). It's a presumably Funtime-affiliated "Harry Potter" hack of Magic Carpet 1001, predating the common Inventor version. It's probably headered incorrectly here, I couldn't get it to bankswitch.

The games do seem to be extractable (I just searched for common text strings such as "NAMCO" to find game data), though emulating them under the current VT369 specifications doesn't display anything. I'm questioning if this is an incomplete dump, as I do not see any of the VT02/03 games that (AFAIK) are included on this console.

If it's of any note, I was able to partially make out graphics data in YYCHR via the "2BPP MSX Screen2" setting (the downscaled versions work under 8BPP SNES Mode7). The graphics display at 8x scale horizontally in this mode, though the true pixel count does appear to be exactly double that of the original graphics (e.g. 32x32 pixels for Pac-Man's sprite).

I attached rips of the Pac-Man and Sqoon hacks below. The coding is similar enough to the lower-resolution versions to where I assume these are complete game extracts.