My dream game is not some big, grandiose mmo, but simple: combine two elements to get the third 
If you have any feedback, what I should improve or change, it will be very appreciated
There are two issues with this genre of game:
- There’s no reliable way to predict which elements combine. Some combinations are more likely than others, but ultimately it’s all about guessing which combinations are built into game and which aren’t.
- As the game progresses, the number of elements increases but the number of undiscovered combinations decreases. This makes the game progressively less enjoyable to play until the player finally gives up.
Both of these problems are kind of inherent in the genre and therefore cannot be fully “fixed”, but they can be mitigated through a hint system. For example, the game could mark which elements still have undiscovered combinations and which ones don’t. That would prevent the player from getting overwhelmed by the huge number of elements that aren’t used in any combination in the late game.
Thank you that is very good insight. I’ll build it in the next release