Build me a 2d game on the Gamesalad platform

I need a 2d game similar to bloons tower defense 5 on gamesalad. I don't want it to be exactly the same and I want it simple meaning it doesn't need all the extra stuff bloons td 5 has. Just the core game (balloons coming at you and with each round making the balloons come faster like in the original game) with the shop to buy artillery to defend (spikes to place on the ground to slow them down), round number (what level you are currently on), and your health bar. Also, it doesn't have to be balloons coming, it can be something different like a golem and the monkeys can instead be miners.

Budget is $40 but I can go up to $50 if necessary.

I also need it done by November 17th.