Bug or not? And question

How much mana should I gain at level-up? (I am playing Windows 2.0.25 as a nature mage), and my mana isn’t going up with level - just my spell power. Is this a bug?



Mana does not go up every time you do, only at certain level milestones. Like, 10, 25, 50, 75, 100… things like that. I don’t know the exact ones those are examples.