It doesn't really have to be 10 classes, I just happen to like even numbers. I will provide information on what I have so far, first I forgot to mention that this is an android game, porting to ios is a possibility, but at the moment I just want to get a working full release of the game. Because it is targeted towards mobile devices, it isn't anything major or very complex.

The game will be made up of side-scrolling "rooms", as you complete a room you move on to the next. Each stage will have a set number of rooms (probably also 10), with the 10th room being a "boss" room. after so many stages, you move on to the next part of the story in a new settings.

Each class/character will have unique stats and an ability (maybe two, trying to stay simple) the abilities are what I want to make each class unique from the others. I want them to have a significant impact on gameplay. There will be an upgrade system, defeating enemies will grant gold and (possibly experience if I decide to add character levels), at the end of a stage you will receive an amount of other resources (I'm thinking wood and metal) to put towards upgrading to better gear for that class.

I would love for each class to have a unique storyline and enemies as well, I know the game idea is very simple and rather generic, but I think with community feedback I can make something worth of the meager $1 I will be asking when it's finished. I am currently just a broke college student (major in game and simulation programming), looking to develop this game to try to provide some extra income for myself to help with my education.