Uplay was originally designed as a rewards system for playing Ubisoft titles across all platforms.

FORBES: Uplay PC: Ubisoft Enters Digital Distribution Space Alongside Valve, Electronic Arts

Duel of Champions is cross-platform on PC and iOS (coming soon) through the Ubisoft Uplay account system.

FORBES: Duel of Champions: A Must-Try CCG

Ubisoft joins Valve, Electronic Arts and Gamestop in the digital distribution space as it launches Uplay PC , available for download immediately.

FORBES: Uplay PC: Ubisoft Enters Digital Distribution Space Alongside Valve, Electronic Arts

In reality, Uplay PC is a way for Ubisoft to cross-promote its various franchises, and capitalize on the 35million registered Uplay members it already has.

FORBES: Uplay PC: Ubisoft Enters Digital Distribution Space Alongside Valve, Electronic Arts

Ubisoft launched its Uplay service in 2009, initially offering online access to its own titles but later expanding its range to include games from Electronic Arts, Square Enix, Warner Bros Interactive and others.

BBC: uPlay