Angry Birds came to Windows Phone 8 some time ago, and at the time Nokia reassured us that the app will indeed also show up on Windows Phone 7.5 also.
It took a month, but now the game can be found in the Windows Phone Marketplace.
Join an epic adventure with the Angry Birds in the legendary Star Warsâ„¢ universe! Use the Force, wield your lightsaber, and blast away Pigtroopers on an intergalactic journey from the deserts of Tatooine to the depths of the Pig Star — where you’ll face off against the terrifying Darth Vader, Dark Lord of the Pigs! Can you become a Jedi Master and restore freedom to the galaxy?
Thanks hengxiang32401 for the tip.