re: polish, yes, it’s all about scope, pretty much. Less to do, more to polish. And insane time put in. I probably put in about 150hours on the game in 2 weeks. Pretty insane schedule.
re: engine, no. It’s ok for me, but nowhere near something other ppl could use or would want to. Something like PowerQuest (my recommendation if you have some programming / Unity experiecne), Adventure Creator (Unity), or AGS / Visionaire etc are much better choices. I was just working on it and at some point I was like “I have enough to get close to making an old Scumm game?”
What about you? What did you use for your game?