First of all, I have to say that My Memory of Us is incredibly important game for me as a Polish. It depicts what is perhaps the most tragic event in the history of Poland - and does it in artistic, subtle manner. No propaganda here, only cruel world seen by the eyes of kids - and described with the voice of Sir Patrick Stewart (yup, THIS Patrick Stewart). Beside that, it's a solid puzzle-platformer, with delightful graphics and clever level design. It's very much like Valiant Hearts - not so polished and perhaps shorter (it can be completed in 4-5 hours), but worth playing just the same.
There are many games trying to capture the charm of childhood but perhaps none of them does it so well as Knights and Bikes, with it's cute art style, clever story, adorable characters and witty dialogues. And it has co-op mode, that's always an advantage. Let Demelza and Nessa take you on their great adventure, you won't be disappointed... Just don't play for too long at once, the game can become a bit boring due to repetitive, chaotic fights and unrewarding exploration (unless you enjoy buying dozens of customization parts for your bike). Anyway, it's something unique and deserves your attention... Money too ;-)