Xbox Store This week on Arcade: Wallace & Gromit Ep. 2 & Sonic & Knuckles (Updated) by Major Nelson • Sep 7, 2009 @ 2:00pm Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share via Email. Wallace & Gromit Ep. 2: The last resort (800 points) and Sonic & Knuckles (400 points) are this weeks Xbox LIVE Arcade releases and will be available this Wednesday. Edit: It appears that Wallace & Gromit will be not be available this Wednesday. It will release at a future TBD date.