Defold

I've been enjoying the use of AppGameKit Studio's IDE but soon now I'm intending to try out the Defold IDE and engine on a Linux machine.  Defold looks very promising!

If you value:

1. A stable engine: Updates don't break your project easily,
2. Smaller size exports; Blazing fast Web Builds,
3. 1 Click Exports for all Included Platforms,
4. Console Support (If you are a verified/partnered Developer), 
5. Well maintained official and community extensions

This is the engine for you.