HI!!!! Me and my friend decided to make a game and we need some advice!
-What type of games do most of you guys like best?
-What are the best languages to make pixel and 3D games?
-Tell me some multiplayer game engines (coding online) if you guys know (except Unity)
A game engine is not multiplayer, you need to make a multiplayer server (usually).
@HQuan there's this experimental game engine I heard about called Superpowers http://superpowers-html5.com/index.en.html. It's 2D and 3D, 100% web based and one of you runs a server for Superpowers and the other one uses a browser to make the game. It's really awesome, I tried it once but didn't get far (I am not filled with determination). It's fully open source and I recommend you give it a try.