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When I refer to multichain I mean the fact that ‘SPS Chain’ is built with a more flexible approach that addresses running on multiple chains (instead of being ‘just’ a Hive L2).

In this way (maybe) Splinterlands could convince some external investor who would only invest if SPS was in Solana/Eth, for example.

Obviously I don't know the details, but this is what I was referring to.