My recommendation would be RiME and Spiritfarer, both managed to make me cry.
Spiritfarer talk quite a bit about death, sometime through diseases (cancer, demencia, etc.), but in a different way than To The Moon, and you may find it ok.
RiME topic is a bit different, but cannot be spoiled unless you want to diminish the impact. In my case I went blind and damn it hit me like a truck 😅. On the stellar OST side you could try Gris. Pretty emotional too, but in a way more abstract way than the first two.
On the topic of war and its horrors you got Torn Away, as well as This War Of Mine, both very emotional journey.