production process of making my game. I was thinking of a 2D Game Engine. Can it be done with JavaScript, HTML5? I want it to look like this: http://cdn4.steampowered.com/v/gfx/apps/26800/0000007899.1920x1080.jpg?t=1383936315 (if link doesn't work, it's the game 'Braid'). Will it be complex (to make it look like that?)

Are you a beginner? It is hard to give you a proper answer if you don't specify what you know. However considering you are on "pre-production" of a game, and you are asking such a question, i am guessing you are a novice; if that is the case, then you shouldn't be trying to build an engine, The game engine for the game "Braid" was created by professional programmer Jonathan Blow, who's been programming for many years. (Watch the film "Indie Game: The Movie" for reference).

make games not engines

To answer your first question. Yes a game with the quality of Braid can be done in HTML canvas.

Your second question (Will it be complex). I don't think so but then I don't know your level of abilities.

You should follow HyperVs advice and try focusing on making your game rather than making an "engine". Usually it is better to make your game and release it then if you want to make another game pull out all the best bits, refactor and reuse them. After a few games you will have a framework (engine) that is suited to your way of development and is easy for you to modify and reuse.

If you set out to make an engine first you will quickly finding yourself making half an engine, then restart, again and again and never really make a full game.

Buster2000 speaks the truth about restarting again and again if you attempt to make an engine from scratch. From the few screen shots I've seen of Braid I would look into Unity3D 4.3 since they just made it a lot more user friendly for creating 2D style games with 3D models. Or so everyone is saying. I have it downloaded but have not played with it yet. I often find myself in a loop like Buster talks about lol its obnoxious and while you do reenforce the basic fundamentals of programing or game dev in general you do not get anywhere. I've been playing with Game Maker Studio a little bit lately and have managed to create a rough top down "scrolling" shooter. Combat works and you gain points but no menu system or respawn. I've toyed around with udk(ude 4 was released today) made a cube model in blender then was able to have it move around and jump in unreal 3. I was able to get a room of sorts working in unity 3 using a smartfox server so players could log in walk around and chat with eachother(chat bubbles). I got frustrated trying to get a basic inventory and combat working though, I've made a flash "game" where I have a dot that moved in a room and was obstructed from moving by walls and had a door with working room transition. None of it got anywere though. My point of my ramblings is make a game not build an engine lol I guess this could also be an argument for working with a team as one person focus's on one thing another on something else so the pieces slowly build together into a working mass.

~ Soul-Burn