Flash game - thoughts

So, the game works, but i feel it could be much better. I started with the visual identity and then programmed basic interactions. I would like to improve both.

Visual identity

• Many objects are repeating in this game now and I want it to be more varied, "colorful", but in typographical meaning, i don't want to add colors
• Another levels of gameplay will introduce new backgrounds, enemies, etc.

Interactions

• I mentioned collecting letters before, this feature will be deeply integrated in the game structure, i think the audience will be thrilled by this game because of these reasons:
• This game really looks different and introduces nice ways of descriptive looking world, people would like to know what's on the next screen
• Various interactions with letters
• Good music and sounds