Ok, here are hints for these games:
38: 
72: 
74 73: 
75: 
77 76: 
Below are short quotations from the games, in no particular order. (I’ve tried to choose excerpts that might help jog people’s memories, but that wouldn’t be total spoilers.) (But it’s hard to gauge! Probably some are more spoilery than others!)
“You feel like a nice rock on the rocking chair would relax you before you go anywhere.” (This has now been guessed! For future reference, it’s from Daddy’s Birthday by Ruth and Jonathan.)
“You tried to tell the professor that bringing a harpoon into an inflatable lifeboat was a bad idea.” (This has now been guessed! For future reference, it’s from Untold Riches by Jason Ermer.)
“Your roundness is perfect and exquisite, your color a sweetly deep cerulean. In your cross-plane eight points mark a square.” (This has now been guessed! For future reference, it’s from Marble Madness by Emily Short.)
“One wrong move and you will either end up in la Bastille or on the block.” (This has now been guessed! For future reference, it’s from Secret Agent Cinder by Emily Ryan.)
“You are just a soft lattice of nerves, after all” (This has now been guessed! For future reference, it’s from the sea god by christine mi.)
And here are some more hints (not quotations this time).
Authoring systems used (in no particular order):
One Twine game
One Bitsy Game
Two Inform 7 games
One Inform 6 game
Miscellaneous hints (mostly in no particular order):
won an IFDB award
adaptation of a non-IF game
won an XYZZY award
Further hint related to above hint: for best multimedia
part of “IF Arcade”
ParserComp game
child co-author
IFComp 2015
Emily Short
(Edited to add hints, correct mistakes, etc.)