The said addon will attempt to have access to all the data you input on a website, which means the malicious addon can and will likely send your password information to the wrong hands.

Chrome webstore displays the addon as a game, but in fact is just a hoax. In case you've installed this, you should delete the addon immediately.

You can find many results on the Chrome Webstore by searching for Bad Piggies, but the results are all fake. One of them being gametc.net.

At the moment there's no official version of the Bad Piggies game for any other platform than Android and iOS.