As a Unity guy for many years, I decided to try GameMaker for 2D. I had only tested a few things briefly for the jam, it was largely a risk to use it in the jam. Ultimately though, the flow in GameMaker is super nice for quick sprite drops, logic, etc. I chose the game to be fairly simple, and ultimately it fit perfectly for the type of flow GM offers. I miss C# for sure, the APIs seem somewhat inconsistent with naming etc. but there's enough documentation and online blogs etc. to find what you need.

I'll definitely try more GameMaker in the future.

Please try out my first GM game : https://ldjam.com/events/ludum-dare/48/deep-sea-explorer-1