[Haggler]

Yep they are there and some people will probably never know they exist, hence the reason behind this thread.
If you own one of these cheap plastic alternatives or are considering buying one then post in here.

Retro Duo (plays Nes and snes)

YouTube - Retro Duo Unboxing - NES and SNES All In One! RetroDuoYouTube - Retro Duo Review and Setup - RetroDuo NES & Super Nintendo Game System

FC 3 plus (plays nes snes and genesis)

YouTube - Unboxing FC3 Plus 3 in 1 NES, SNES & Genesis Game SystemYouTube - FC 3 Plus Review & Game Compatibility List - 3 in 1 System

GenX (plays nes and genesis)

YouTube - GenX Unboxing - Original Nintendo & Genesis SystemYouTube - Gen-X Dual Station Nintendo & Genesis - GenX Review & Setup

FC Twin (plays nes and snes) and also the aptly named by same company GN Twin (plays genesis and nes)

YouTube - Classic Game Room HD - FC TWIN review: NES & SNESYouTube - GN Twin - Genesis & NES In One System! - Unboxing

Retro Duo - Wikipedia, the free encyclopedia

FC Twin Video Game System - Wikipedia, the free encyclopedia

Note i own none of the above (hence don't ask my opinion) and they are posted solely to show they exist and maybe incur some discussion.