Great !
this kinde of platform doesn't really needs skilled programer, instead, it requires a lot of dicipline and a lot of comments, this way you won't be lost, and don't fall in the "It's my code" trap, it happened to me, just 5 minuts away and i forget what i was doing, then got lost in the code (it happens to everyone, don't laugh)
Also, don't put all the code in the same file, create one for each game or game section, with a common.js file, or create modules.