Nintendo's Wii console currently has the greatest number of games available for download, though all are re-released titles, according to Electronic Entertainment Design and Research.
While the Wii leads in the quantity of downloadable games, Microsoft's Xbox 360 offers the greatest number of original downloadable games over Xbox Live Arcade, the research found.
Additionally, 84 percent of downloadable 360 games have online functionality compared with 45 percent of PS3 titles and zero percent for Wii games.
Only 12 percent of downloadable games are original titles, says EEDAR, especially given Nintendo's lopsided contribution of older games.
"In an environment with crippling production costs, publishers have new ways to dramatically impact their financial gain, while making gamers happy, if they understand how to utilise the new generation of console storefronts," the report said, adding that games with downloadable content sell 114 percent more on average.