games. REU being adopted as regular hardware in remakes of the Commodore 64, made it's blitter-like chip regular use in moderm games for the old computer. Even the C64 mini has that implemented. The 1541 Ultimate II+ cartridge I use on my SX-64 has an REU, too. Also since memory had become very cheap, 1 MB cartridge games that were flashed on a Easyflash or KungFuFlash, or even just ran directly from a 64 Ultimate or C64 mini/maxi have become normal fare. Making what would have been a multidisk game made up of many files run from a super slow 1541 disk drive, into a game that would run like off of a RAMDisk. Often even better if it also made used of the REU's chip to move data even more quickly. The Commodore version of Sonic does this to more quickly write to the raster memory for those fast scrolling levels. The 6510 CPU alone just wasn't fast enough to do it along with playing music, getting input from the player, and moving sprites around. Also getting more sprites on the screen, which can be tricky since the VIC II can only show 8, but boving them while the raster is still being scanned can make it look like more. Or if there isn't more than a few sprites needed, they can be overlapped, one color at a times, like a a silk-screen t-shirt is printed, adding one color at a time to make a full color sprite. As Sprites from the VIC II tend to only be one color in hi-res made, or 4 colors in in multi-color mode with fat pixels. The C65 Commodore produced prototypes of bet never released had the REU chip stock. It also had two SID chips, but also had a 16-bit CPU and 4096 colors. But it was pulled because they didn't want it to compete with the Amiga 500. There are about a dozen of the C65s made by Commodore floating around our there, as they did make it to software devs back in the day. Not all had gotten returned before Commodore closed it's doors in 1994. Then there's the C64 project that has been making them, completely re-engineered, and perhaps not even compatible with the prototypes. They are, however, made rather slowly as about as fast as they can find 800K disk drives and refurbish them. It's also hard to find 800K disks, as they haven't been manufactured for decades. It doesn't use disk images like the 64 Ultimate and C64 mini/maxi. It's also not (yet) endorsed by the new Commodore. Possibly because they are trying to focus on products that bring back the nostalgia, rather than bring back something that never really made it into the hands of the consumer. I doubt the Commodore 128 would be pursued. Not that it never made it to consumers, it did, but most of the sofware they used on the Commodore 128 was in Go64 mode. I had a 128D, and the only games I had, out of the dozens and dozens of games I had that used the extra hardware, was Elite and Ulima V, both only played music while playing the games. Otherwise it was exactly the same as on a Commodore 64. I used BBWriter and Desterm in 128 mode, and that was about it. Towards that end, it was mostly Desterm, because I was gaming on my PC more. Actually, my little sister would be gaming on the PC, while I used Internet on the 128D, through a shell account.