Need FLOSS educational game suggestions

[lmemsm]

I'm trying to put together a list of FLOSS educational games to help parents and educators keep students (or learners or any age) entertained. The current list is here:
https://lmemsm.dreamwidth.org/15912.html

If you know of any FLOSS educational games that didn't make the list, please share the links. Also, if you know of other FLOSS educational resources or FLOSS remote learning or OER related links, would be very interested in hearing about them. Thanks.