Is alien worlds on Ethereum?

Could you please elaborate on whether Alien Worlds, the popular blockchain-based metaverse game, is indeed built on the Ethereum network? I've heard rumors about its integration with various blockchains, but I'm specifically interested in knowing if its core infrastructure and tokenomics revolve around Ethereum. Understanding this would greatly assist me in making informed decisions regarding potential investments and strategies within the Alien Worlds ecosystem. Could you provide a concise yet comprehensive answer to this query?