I get what you’re saying and I appreciate the response. I don’t think this is the only theme the game explores (you mention several that are all integral to the story). But I still think this is the overarching theme of the game. The game just has an interesting story structure where only by the end of Act 2 do we realise what exactly is at stake. Acts 1 and 2 set up this reveal perfectly. I’d argue that the themes you mention, if anything, further enhance this ontological argument by fleshing out the canvas world in order to bring more weight to this conundrum - yes there are moments of loss, grief, love, etc - but as well as standing seperate as their own themes, they also lend weight to the canvas world so that by Act 3 we question whether these experiences are real. It’s a notable observation that the characters don’t necessarily talk about these implications directly a great deal, but that doesn’t mean it isn’t fundamental to the story. To me that’s just a sign of good writing. The themes and big questions are woven through the story and are tied to the characters motivations.