What include hard mode?

[prikaMtk]

Hello guys, anyone know difference on normal and hard mode?

[TheAxeMan33]

I was wondering the same, it doesn't say what any of the difficulties change so I just stick to Normal

[habakkuk73]

I believe it's the amount you need for each star that changes, so easy you need less than normal (default) and hard you need more.

[Alpha [Fenris]]

it also changes the money required for upgrades i think