Nice! What you can do is reuse the structure of your game, and make another one. Basically, just re-skin it.

Then, I think a better approach is to just give it away for free. Then, display ads, or sell tokens when they player dies.

Only display ads, in non-critical parts of the game, like when the player dies, or when he pauses the game. Or in between levels.

But, the biggest money maker, might be to sell tokens. Once in a while, you’ll get some guy that just drops $20 on your game. These guys are the whales.

What did you write it in? Objective-C or Swift?