Hi,
Thank you for the feedback. I'll (hopefully) answer/clarify some of the questions you asked.
I got impression that each section have their own cards [...]
Yes and no. There will be cards that will be solely oriented towards a certain aspect. Most likely, those cards will be "beginner" cards, due to their lack of complexity (e.g.: deal 6 damage; give 3 seats). However, more complex cards should tend to affect multiple aspects (deal 3 for each space taken; deal 3 per difficulty; add 1 seat per difficulty).
Do [cards] define [the] number of supplies for the travel?
Currently, no. I didn't come up with a way to really link the navigation aspect with the other two. But, I believe I could add something where the cards need some resources. Fights could give you resources (which would make the choice between two fights more interesting).
[S]ince [the] boat space is limited, will [the] player be required to rearrange cards again in their boat?
I am not sure to understand. Will the player be required to rearrange cards from zero (remove all the cards from the boat)? No. The cards will be kept in the same place. Will the player be required to rearrange cards (reorganize to fit)? Yes. For example:
On the left, you have the current organization of your boat. You can't fit the card Z. If you want the piece, you will have to move stuff around (move, rotate). But placing the card isn't required. If you don't want the card, don't place it.
* = Empty X*C Z* ZXY XY* + Z* => ZXY *Y* ZZ ZZC
I suggest setting different number of reward card based on difficulty [...]
Totally! I simply used "3" as an example, but the amount of cards given will (and should) vary depending on the difficulty.
I understand about card and health but with money you'd need to create a system where money is needed such as shop.Yes, a shop was planned. I simply had no idea what to put it in.
[H]ow would the fight be? 1 vs 1 or 1 vs [X] ?
1 vs X, but mostly 1 vs 1. Most of the fights will be 1 vs 1. I doubt it's fair that you fight two strong enemies without having the ability to target. But, I don't throw away the option of offering battles against multiple foes. However, the additional foes will only be supporting the main one (the one you are targetting). For example, the main enemy will have 120hp while the other two will each have 12hp.
[W]ill attack cards target all opponents or target a random single enemy?
Depends. If I add 1 vs X fights, some cards will hit all opponents. However, the other cards (e.g.: deal 6 damage) will only target the first one.