When Wii U launched in the UK last month its software struggled to make an immediate impact on the sales charts, with only Nintendo Land and New Super Mario Bros. U making into the all-format top 40 at 26th and 36th respectively. Considering only 40,000 Wii U systems were out there, it didn't appear too distressing.

Sales since then, however, have not improved, with last week's sales chart providing some disappointing reading for Nintendo UK. New Super Mario Bros. U and Nintendo Land have both failed to make it into the most recent top 40. Of course there are still fewer Wii U consoles out on the market right now than other consoles, but Nintendo will hope this improves in the coming months.

The only piece of Nintendo software that made it into the top 20, meanwhile, was New Super Mario Bros. 2 on the 3DS, which came in at 19th. Call of Duty: Black Ops II took Christmas number one, naturally soaking up sales from a multitude of platforms.

It's not the most surprising news to see Wii U games struggling to gain traction in the charts at this stage considering it has such a low install base compared to its rivals, however some may point to the price of the games at retail being an issue, with many titles commanding a retail cost of £50. Many gamers may have decided against buying more than one game or may have simply stuck to Nintendo Land or ZombiU, if they bought the bundled consoles.

What are your thoughts on this? Why do you think Wii U games are struggling in the charts? Let us know in the comments below.