Version 4 is what's currently sold as of February 2020.Is the latest revision the green 161 in 1 cart they are advertising as "version 2" on aliexpress?
I was wondering what was different in version 2 as game list looked the same.
I noticed they do seem to have some new Neo Geo cart products lately. E.g. These custom one game carts where you tell them which game you want and they make it for you.
But this brand new custom cartridge service is just plain shocking. They appear to be using the same CPLD and flash chips as on the 161 in 1. Instead of the stilt chips, they're using 2 more of the NOR flash chips already found on the 161 to store the game of your choice. The CPLDs are likely programmed differently too. This is worth a post of its own.