What's the easiest, fastest and not too cutting on result quality way/language to make games? Do you guys have any advice?
It depends on your goals.
Unity is a big one (Pokemon Go, Inside, Ghost of a Tale, Kerbal Space Program, Super Mario Run). So is
Unreal, which more non-mobile focused AAAs use, and Epic (Fortnite, PUBG, Life is Strange, Mortal Kombat, Code Vein, Psychonauts 2).
Godot Engine is the up and coming open source alternative that keeps looking better and better:
https://godotengine.org/showcase.
Lots of indies focused on 2d use
Game Maker (Hotline Miami, Nuclear Throne, Minit, Downwell, Catacomb Kids, UFO 50 etc) And then there are a few using
Multimedia Fusion 2 (Baba is You, Nifflas, Environmental Station Alpha), or
Construct (Iconoclasts). Some who used XNA a decade or so ago are now using
MonoGame (Celeste, Fez was MonoGame I think)
There are strengths and weaknesses to each one, and each has their tradeoffs. Unity is the most popular at the moment, with them touting that 50% of all games are now made with the engine. MonoGame, like Unity, is also full on C# (a great language), which pairs well with
Visual Studio Code as a code editor for either.
If you wanna do 2D, Game Maker is probably the best and easiest all-in-one package to get started with, or maybe Construct.
For 3D, Unity or Unreal, take your pick (
Kine was made entirely with Unreal
Blueprint scripts, no C++. for example), but Unity will have the most resources online due to its popularity, but then again, the engine is changing rapidly. If you pick up Unity, make sure to grab the assets,
ProBuilder, for quick in-engine 3d modeling, and the
Postprocess Stack, for easy graphical effects.
Later on, if you want to dive deeper into 3d asset production as a solo dev, check out
Blender. If you want to go for your own 2D sprite based stuff, check out
Aseprite, though many use Game Maker's built-in sprite editor.
Yeah, it's hard to think of a successful indie game that was developed with its own engine.
Noita:
https://www.gdcvault.com/play/1025695/Exploring-the-Tech-and-Design@Thems, Return of the Obra Dinn is Unity