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The other primary tool to think about today is Godot (https://godotengine.org/). I feel like Godot is to the main game engines (Unreal and Unity) very similar to Blender's relationship to the major 3D modeling tools (Maya, Max, etc.) Godot is improving at a dramatic rate, and it's a wonderful tool for creating 3D games from assets you create in Blender. It's lightweight but incredibly powerful, is reasonably easy to learn, and exports to a lot of great formats including web.
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InfluxDB
Purpose built for real-time analytics at any scale. InfluxDB Platform is powered by columnar analytics, optimized for cost-efficient storage, and built with open data standards.
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There are two primary contenders to replace the BGE. One is Armory3D (https://armory3d.org/) It has a ton of potential, and outputs to multiple formats including web. But it's a one-developer show and it's been really inconsistent. I taught a class on prototyping 3D games with it, but updates are slow and inconsistent, as is the documentation. Too bad, because it's a promising project, with a blueprints-like visual system and Haxe (basically an open-source actionscript) as the programming language.
