How long does it take to create game like "Onslaught Arena"?

cocos2d-x JavaScript
#1

Hi, could you please tell me - how long does it take to create a game similar to

Onslaught Arena http://arcade.lostdecadegames.com/onslaught_arena

23a3bbfc4aa06818.jpg640×503

Video http://www.youtube.com/watch?v=D5rkzAtR1ag

I’m pro JS developer and know JS/HTML5/CSS very well, also I know general things about game development but don’t created games yet.

So, how long it would take if working 8hours/day. I’m personally guess it should take something from 2 weeks till 1 month, I’m I right? I mean programming only, the art would be created by other person.

Also, a question about the programming language, I’d like to use JavaScript, but, does it works well on iPhone? Or it can be laggy and eat the battery faster than let’s say C++?

#2

It depends on experience to develop game.
There may be a lot of thing to make game than you think.

Just try to design how to make this game.
Then you can see what you need to do and how long it will take.