Whilst attempting to work through the tutorials I am encountering several broken links.
As example try to click the first link shown in this tutorial: https://www.scirra.com/tutorials/308/cloning-the-classics-pacman
That is a link to the old forum, which Tom has already stated isn't working yet. He is going to try to get it back up and running when he returns from holiday.
https://www.scirra.com/forum/new-arcade-beta_p912241?#p912241
Tutorial can still be followed, but if you subsequently then require the finished file, someone on here will probably still have it.
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Over a month... link still 404