Thanks for playing through the game, even though it was hard. We really appreciate it.
Hehe, we're big Hamilton fans! Glad you noticed our references. ;)
It's our first project! We're actually a group of four people, though, which made making the game an easier task. We used Unity and a third party engine (VN Engine) to create our game within our timeline (which was 6 months). It depends on the type of game you want to create, but there are lots of free game engines out there! https://conceptartempire.com/free-game-engines/
Hope that helps!