Hacker News Reader

Godot is coming up mighty quick. I've been favorably impressed. Also, if your concept is 2D, it's way beyond the 3D-centric game engines for that task: might not be the question being asked, but it's worth a thought.

Maybe keep an eye out for S&Box, the successor to Garry'sMod.

It's not out yet, but uses the Source 2 engine and C# for modding, and will probably have an active community from launch.

Why is Roblox terrible?