Higgs Anomaly
This uses my game engine : Tickle
The game is written entirely in my own scripting language : Feather
Together, these make writing games, quick and enjoyable.
Status
Just over 1,000 significant lines of code (games written with Tickle tend to be quite small).
The code is mostly finished, and there are a reasonable amount of levels.
Tickle doesn't support drawing arbitrary polygons, so the caverns are made up of lots of individual overlapping rock sections, which makes level design a PITA.