To start off: I am not your lawyer; you are not my client; and this does not constitute actual legal advice nor the formation of a legal relationship.
You're asking about section 6(a) of the User Agreement, which reads as follows:
This is an extremely common and standard clause found in many user agreements. For example, you can see Blizzard's here: https://www.blizzard.com/en-us/legal/fba4d00f-c7e4-4883-b8b9-1b4500a402ea/blizzard-end-user-license-agreement.
There are also numerous user agreements which use the exact same wording as ours, which can be found by a quick visit to your friendly local search engine:
https://www.appminis.com/tos.htm
https://offtargetstudios.com/terms-of-services/
https://gamersbooklet.com/terms-and-conditions/
Now, for the explanation:
First, the entirety of section 6(a) is bounded by the the following (i) and (ii) clauses. Note that both these clauses specifically state Your. This means that anything you read (in section 6(a)) only applies to your conduct and use of the game, and not to any hypothetical third-party lawsuit. The common-law understanding of indemnity is that it must be bounded by explicit scope, and indemnity does not apply outside that scope.
Second, 'defend' here is a legal term of art. It means that if we are sued for anything within the scope of the indemnity (that is, violation of the User Agreement, your conduct within the game, or your use of the game), you must defend us. Again, this requirement is specific. If we are sued for something not specifically involving you or your conduct, you have no obligation here. Again, if a hypothetical third-party were to sue us and your actions, conduct, or use were not specifically part of the lawsuit, you would have no obligation to us.
You can find another reference here: https://www.dlapiper.com/~/media/files/people/hamilton-michael/cpexecutive--indemnify-defend--hold-harmless--august-2014.pdf. Note especially point 11 from this document: An indemnity that protects the indemnitee from the consequences of his or her own illegal acts is not enforceable. (For the purpose of section 6(a), Homecoming, our employees, etc, etc are the indemnitees)
Hopefully this helps assuage your concerns.
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