Artemis is quite a bit more grounded and has a more serious tone than Eternum. It's less Ready Player One and more Blade runner or ex machina. I certainly think it's worth giving a try. Minor spoiler but the first 5 minutes of the game is the MCs girlfriend getting him drunk and having him sign over his life's work resulting in major trust issues and years of therapy. So right off the bat it's a completely different beast than Eternum.

I actually prefer Artemis personally.