Another problem came from the fact that both the 464Plus and GX4000 (essentially a cut down 464Plus) had 64KB ram. As a result using the Plus features to the full was not so simple if the game was to run on these systems. If 128KB ram was the minimum then this would have allowed more flexibility for graphical data, sampled sound etc and would have easily enhanced a 64KB only game.
A 6128PLUS config with 512K ROM cartridge and disk Drive support is the optimum "from the shelf" Amstrad PLUS config, but such beast was never fully unleashed yet.
== Almost Direct Disk to Cartridge Port ==
Most A good part of the games with CPC and PLUS existing versions are "Almost Direct Disk to Cartridge Port", a "Direct Disk to Cartridge Port" with small modifications. The use of the extra Plus features varied a lot. Some didn't use much, others used more.
== Examples List of Direct Disk to Cartridge Ports ==
*[[Batman (Cartridge)]]Those were at least adapted to the ROM format.
*[[Barbarian 2 Batman The Movie (Cartridge)]]
*[[Barbarian 2 ( Cartridge )]] *[[Mystical ( Cartridge )]] *[[Klax ( Cartridge )]] *[[Tintin On the Moon (Cartridge)]]
These could have benefited from using the Plus 4096 colour palette as a minimum.
Yet some of those actually had some especially made graphic pages (Tintin on the Moon perhaps) using PLUS palette, or some slight changes in palette. == Examples List of "Almost " Direct Disk to Cartridge Ports == Some other cartridge games looked similar to the CPC version, but did have some enhancements (few visual effect or cinematic/Intro pages). *[[Crazy Cars 2 ( Cartridge )]] : sky smooth colourfull gradient or HUD re-coloured... added option such as the map. Upgraded intro page too.
Some other cartridge games looked similar to the CPC version, but did have some enhancements. Some examples*[[Fire and Forget 2 ( Cartridge )]] :added smooth sky gradient while playing (same recipe as in Crazy Car2) and Fullscreen Intro/Cinematic pages.
*[[Crazy Cars 2 Operation Thunderbolt ( Cartridge )]]: PLUS palette used, yet exactly same game engine (and datas).
*[[Fire and Forget 2 Wild Streets ( Cartridge )]]: mostly re-colouring to fit the better PLUS palette, and fullscreen intropage. (perhaps a few Hardsprites used ?)
This was still better than the direct ports, as it could give some "16bit version look" thanks to the PLUS palette (Atari ST portage lookalike).
== Price comparison ==