According to Nicalis, the indie publisher of La-Mulana, sales numbers for Nintendo's WiiWare service are now "almost non-existent".
Nicalis canceled the planned WiiWare release for La-Mulana within America and Europe due to the fact that it's "near impossible to sell sufficient units on WiiWare".
The company's founder Tyrone Rodriguez explained to GoNintendo:
"The WiiWare market has a fraction of the players from 2008. The window for release and success of software on the platform ended in 2009 and took a very steep decline. Players have moved onto other digital download platforms.
"Nigoro got a bit ahead of themselves and spent two years agonising on getting the DLC sort of working for Japan. Unfortunately, it never passed Nintendo's submission process in the US or EU with DLC in place. With the Wii U in the not too distant future and WiiWare sales almost non-existent, I had to make a call today. I wish them the best. They're good game developers and good guys."
Japan-based studio Nigoro released La-Mulana on PC a few year years ago, with an updated version for WiiWare being developed for several years following. It finally released in Japan last June.