This is a very classic "memory" game I made for my children. It barely took a few evenings and week ends to code, but my children enjoy it a lot. It is now out on Windows Store, and being reviewed by google (it seems to take longer these days). No ads, but very cheap, and it may help people pass some peaceful time in family.
Link to windows store: https://www.microsoft.com/store/apps/9NWJLBH398PX
Or for windows users:
Soon on android and iOS too.
Now out an Android: link: https://play.google.com/store/apps/details?id=net.hieroglyphe.memoryx
And on IOS: https://apps.apple.com/us/app/memoryx/id1509920676