When comparing Leadwerks Game Engine vs Construct 3, the Slant community recommends Leadwerks Game Engine for most people. In the question“What are the best 2D game engines?” Leadwerks Game Engine is ranked 74th while Construct 3 is ranked 86th. The most important reason people chose Leadwerks Game Engine is:
Leadwerks's flowgraphs resemble flowcharts where each box represents a function or value, with connections between them representing program flow. This provides a better at-a-glance indication of game logic than a simple list of events, and makes complex behaviors easier to accomplish.
Specs
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Pros

Pro Versatile flow diagram script model
Leadwerks's flowgraphs resemble flowcharts where each box represents a function or value, with connections between them representing program flow. This provides a better at-a-glance indication of game logic than a simple list of events, and makes complex behaviors easier to accomplish.
Pro Built-in level editor
Has an acceptable 3D map editor that is easy to use.
Pro Handful of Prefabs and Scripts
For example, you take a model (e.g. torch), add a light source to it, add a particle generator (for fire) and save it as a prefab (one file). Then this prefab can be used to add many torches with fire and light.
Pro Runs in the browser
If you don't have your Chromebook, Construct 3 will run in the browser.
Pro Fast and small
Construct 3 loads really fast.
Pro Timeline
It has a timeline feature which allows you to make amazing animations.
Pro No installation required
As it runs in the browser you can load it on any computer and show your friends your work really quickly.
Pro Works on Chromebooks
Construct 3 works on a Chromebook without any issues.
Cons
Con Very buggy
Leadworks is a not complete, it's a work in progress. As such many parts of the engine are clunky, especially the level editor.

Con Documentation and support are limited for non-coders
The flowgraph editor can be used with free script assets to build games without writing any code, but this is not directly intended or encouraged by Leadwerks.
Con Highly misleading advertising
Con Subscription based
It is subscription based pricing. It might not be for everyone.
