This review drops some key words (emphasis in the quote below is mine) that makes even more excited about Winter Burrow, but I feel some of what said in this review is going to give @Roach reasons to worry about playing the game despite my reassurances that it's not too brutal.

Winter Burrow May Look Cute But Its Survival Gameplay Is Anything But Cozy

It’s clear that Winter Burrow is following the same pattern as The Secret of Nimh, using its cute woodland creatures to tell deceptively mature stories. To some extent, it also pushes against the conservative cozy drive toward nostalgia and self-sufficiency. Your mouse avatar may not yearn for the mines, but the countryside is far from idyllic. And rather than escaping the city to focus on yourself alone, you end up more entangled in the lives of your distant neighbors as your needs grow greater. The only way to survive is to do so together, whether you’re a human or a mouse, and Winter Burrow understanding that makes it all the more compelling.