I've found that (as far as I can see) the problem is NOT that the spells use
too much mana. The problem seems to be that your character's mana regeneration (which appears
to be client-side?) is not registered by the server, only by the client. The code to determine
whether you have enough mana to cast a spell also seems to be client-side (it works even during
severe lag). So when you cast a spell, you end up with negative mana (as far as the server is concerned,
since it thinks you have zero and subtracts the casting cost from this) and the server resets it to zero.
However using #mana - or getting your mana recharged by leveling - will register properly with the server, so the correct
amount is subtracted when you cast a spell.
Hope this is reasonably clear and that it helps the developers.
Also, the experience bar seems to be fairly messed-up, you need to get it about halfway across the screen
to get to level 2, and it does not reset when you level up. No idea how this could be fixed though.
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