Browser based game

We are looking for an experienced freelancer or team to develop a browser-based RPG game (minimum playable device size iPad mini: responsive). The game will work as a reward for kids who engage in subject matter (maths, English etc) practice. Learners will be practising skills and earning points. Players are provided a virtual place to develop. They practice math to earn points and convert the points to virtual currency. Virtual currency can be used to buy items to develop the place. Players can sell to other players within the virtual world (trade). Other players can see what is available for sale and buy. There will not be any interaction between players. Back-end admin side is required. Interested parties can request more information. You must be capable of executing the idea and seeing it through completion. Thus,we would be looking for someone who could show us a quick unpolished demo. Serious applicants only. No milestone payments. Paid only after implementation. Extra notes: You must be capable of executing the idea and seeing it through completion. Thus,we would be looking for someone who could show us a quick unpolished demo. Serious applicants only. Conditions: We will escrow the project but no milestone payments. We pay only after successful implementation. Please do not apply if you can't accept the conditions.