As usual, the HTML5 space saw a lot of activity this week, with a particular emphasis on gaming.

Nickelodeon decided to base its new mobile gaming suite on HTML5 this week, based largely on the company’s belief that sales of HTML5-compatible phones will exceed one billion units by year’s end. Indeed, this means the company’s new mobile gaming hub will have broad market reach, although at launch it only has about 15 free games on offer that work on Android (News – Alert) and iOS. This number will grow over time, however.

Likewise, developer of licensable games Novel Games rolled out a new solution that offers around 30 games, all based in HTML5. Expect this number to reach over 400 soon, though, as the company plans to port over 350 additional games into HTML5 as well before the end of the year. According to Novel Games CEO Peter Lee, HTML5 has become much more relevant following the demise of Flash on Android — a major factor in this release.

Gaming aside, Morad Media, the developer of content management system Morweb CMS, this week released a new mobile and desktop website for the Berkeley Humane Society. Made completely free of charge, this new mobile-optimized website has helped boost the Humane Society’s marketing capabilities. Based on HTML5, the new site includes improved flow, an integrated online fundraising platform, a more natural layout, and easier revising capabilities.

In other news, Pixpa, a provider of online presence solutions for photographers and designers, expanded its platform with the launch of HTML5 portfolio websites. These sites offer greater flexibility and power than Pixpa’s Flash-based sites, while boasting greater responsiveness and of course mobile access. All Flash-based sites will be replaced gradually in the coming months.

Lastly, Amazon has begun allowing HTML5 apps in the Amazon Appstore, alongside its slew of native Android offerings. In other words, developers can now submit their Web apps and mobile websites to be sold right alongside all other apps in the Appstore, providing much greater exposure.

That’s all for this week, but check out the HTML5 Report for more news in the space.