FOSS gamedev and creative worlds

Hello Minetest community =) i am new here but i am already in love with the game, and this seems like a nice forum. I really love to play these kind of block games and i was wondering if anyone new of some good free ones (even in development.) I will list the ones I already know so you don't waste your time giving me information I already have (also +/- for what ones i like). 8bit/pixelated is preferred

Ace of Spades +
Terasology +
Mannic Digger -
Mythruna -

Also this thread can be used for general discussion of block games

http://www.blockscape.com/
http://thesiteformerlyknownas.zachtronicsindustries.com/?p=713

http://deepworldgame.com/
http://www.lordsofuberdark.com/
http://galaxy55.com/
http://gnomescroll.com/
https://s3.amazonaws.com/ld48/ld22/index.html