61 games, 18 languages. Just under 8k of code.
Here’s how the programming languages were distributed. A good day for Inform 7, but not a bad showing for URQ and other languages dedicated to CYOA. Also, unix scripting languages and shell tools were well-represented.
Of course, this isn’t very scientific. A lot of the games blended languages or used an interpreter or helper file from another language. The languages could be group differently, i.e., the two BASIC dialects could be merged, and I6 + I7 could count as the Informs, or I6 + I7 + ZIL as the Z-machines. Also, since people could put in up to three games, having three ChoiceScript, for instance, is more likely to mean that one person put in three games, than that ChoiceScript is roughly as popular as Perl across the board.
It is still interesting, though, to see what tools people reach for under “extreme” programming constraints.