[Rayhem]

> The health of a monster is currently represented by a 4 byte signed integer, meaning that the health can range from -2^31 to 2^31-1 (2^31 ~= 2 million). We can already see that half of the integers potential is unused because the health of a monster should never be negative, so an unsigned int would fit way better.

If you're strictly optimizing for memory size out of necessity, then yes. It's dangerous to use an unsigned type in any context where you might even consider subtraction, though, and it's pretty effortless to see that new_health = health - damage is going to be used somewhere. Congrats! Your 100hp lvl3 monster just got resurrected with sixteen thousand hp.