Keeping it simple, there’s not a lot of space to work with on a n iphone screen. The control elements will probably be barely visible if at all, and the top left corner will contain HP and a collectible-counter.
Little fishy guy.
Possibilities for enemies. not sure if they should have weapons or not.
HP / goal objects
The platforms will be made of bamboo and raised above the water. These will be easy to tile.
Some environmental obstacles. At the moment I’m thinking of making the water an obstacle ( as in, the character cannot swim), but there might be some lekker possibilities for underwater.