Eight in One, also referred to as 8 in 1 and The Best Game Collection, is an unlicensed multi-cart for the Sega Master System consisting of eight Master System games, published in South Korea by Hi-Com.

It has 6 versions :

Version A : Hyper Sports 2, Champion Boxing, Safari Race, Astro Flash, Monkey Academy, Star Force, Bank Panic, Teddy Boy.
Version B : King's Valley, Ghost House, Sega-Galaga, Monaco GP, Magical Tree, Ninka Princess, Satellite-7, Hang-On.
Version C : Athletic Land, Super Tank, Bomb Jack, Hyper Sports, Circus Charlie, Exerion, Great Baseball, Yie Ar Kung-Fu.