A quick little C++ program to print out all the words in that GamePigeon game word hunt.
Run these commands in any unix shell with c++11 and git installed (which should be almost any shell nowadays).
git clone https://github.com/kpstesla/WordHuntSolver.git && cd WordHuntSolver
g++ -std=c++11 -o WordHuntSolver *.cpp
./WordHuntSolver
Then type in the 16 characters in the word hunt box. It takes a few seconds to load the dictionary, so I reccomend starting the program before you start the game.
Right now, only 4x4 grids are supported. However, with a few tweaks to main.cpp all MxN grids should work.