I'm serious? Block them in time.
I just checked contributions of these users. But, after the comments were deleted, they are inactive here. I don't block users if the user is only doing bad action once. But, since they are multiple accounts on many communities, I may do your favor.
We can make another infobox past level template on one page (Level ****/Versions) or separating versions each article like 'Level ****/Versions/1', 'Level ****/Versions/2', and make a list of versions on Level ****/Versions article.
It looks like this game has similar trend as Candy Crush Saga which some levels on mobile version and web version are different. Like, Candy Crush Saga Wiki did, we should make a lot of past versions pages with different version.
You don't have to create (Template name) named template and move the template page, just create the template with name you want. (Instead of making (Template name), and move to 'Template 1', just create 'Template 1' and add something on this template)