Telltale Games is briefly offering for free a complete chapter of its episodic adventure series Wallace & Gromit's Grand Adventures as part of the developer's celebrations marking the twentieth anniversary of the claymation man and dog duo's first escapade.

Muzzled--third of the four episodes--can be downloaded from Telltale for free until November 8. The complete season is also on sale for $20 until then--a $15 discount.

Today is also the day the final three episodes of the series arrive on Xbox Live Arcade, and Telltale begins accepting orders for the PC complete season Collector's Edition.

As if that were all not enough, a portion of all PC season sales until November 8 goes to the charities Child's Play and Wallace & Gromit Children's Foundation.

Following up on Telltale's revelation that Wallace & Gromit's remaining three downloadable adventures are due to hit Xbox Live Arcade on November 4, Microsoft has confirmed that the trio represents the entirety of this week's XBLA releases.

Each episode (The Last Resort, Muzzled!, The Boogey Man) will go for 800 Microsoft Points ($10), the same price the first carried when it arrived back in May.

The four-part adventure series was also released on PC, with a downloadable demo of the first episode (Fright of the Bumblebees) available over on FileShack.

Telltale Games has announced that the final three chapters of Wallace & Gromit's Grand Adventures--its four-part episodic adventure series based upon the claymation duo--will finally arrive on Xbox Live Arcade on November 4, following lengthy setbacks.

While the first episode hit XBLA in May, later episodes have only been released on PC, where the series concluded in July. Microsoft had dated the second episode for a September 8 XBLA release, only to retract the announcement mere hours later.

The release of the remaining episodes--'The Last Resort,' 'Muzzled!' and 'The Bogey Man'--for 800 Microsoft points ($10) apiece coincides with the twentieth anniversary of the celebrated British clay man and dog's first animated short 'A Grand Day Out.'

A PC demo for the first episode 'Fright of the Bumblebees' is available on FileShack.

With the second season of Sam & Max hitting Xbox Live Arcade in its entirety this week, developer Telltale has also provided a status update on Wallace & Gromit. "Additional Wallace & Gromit's Grand Adventures" will be downloadable on Xbox 360 in November, the company specified in a press release today. The first episode in the four-part series hit PC in March and then Xbox 360 in May, where it sold for 800 Microsoft Points ($10). The other three episodes have since hit PC, but not Xbox 360.

Though Telltale has yet to provide exact dates, CEO Dan Connors recently told Shacknews that the remaining Wallace & Gromit episodes should hit Xbox 360 in a more timely manner--in other words, don't expect another six month delay between episodes.

The second episode in Telltale's Wallace & Gromit's Grand Adventures series won't be arriving on Xbox Live Arcade tomorrow after all, Microsoft has clarified. While the platform holder had initially slated the Xbox 360 download for release this week, the company has now revealed that Gromit "will release at a future TBD date."

The week's other XBLA release, Sonic & Knuckles, is unaffected by the delay.

This Wednesday's batch of Xbox Live Arcade releases will be the the second episode of Telltale's Wallace & Gromit's Grand Adventures adventure series, titled 'The Last Resort,' as well as the previously-announced Sonic & Knuckles, Microsoft has proclaimed.

Costing 400 Microsoft Points ($5), platformer port Sonic & Knuckles will also replicate the Sega Genesis original's 'stacking' capabilities by making the echidna playable in Sonic 2 and Sonic 3 if you own them on XBLA, and revamping Sonic 1's Chaos stages.

The Last Resort continues the Grand Adventures of England's favourite plasticine man and dog for 800 MS Points ($10), seeing them open a water park in their cellar. Zany!