I haven't seen one skill increase yet, Daggers, Life or Air.

-p

It should allow higher than your current level, I will take a look at it though, might have restricted it too much with the code I put in to cap it.

I found some issues with the restrictions I put in once you achieved a higher level skill, I think I have it worked out now so I will push it with the next release.

Any use of a skill should increase it, the amount that it is increased depends on the level of your current skill. The skill value is a actually a floating point number so as you increase in skill the decimal place that increases moves farther from 0.

The skill value is a floating point number and skill increases start at 0.025 and go down from there. I also implemented some of the suggested skill check logic wherein a chance of increase decreases the higher your skill level above the weapon or spell's required skill value. For instance, a dagger which requires a skill value of 1 will have the chance of skill increased limited once your skill gets above 4 so that skill increases are further apart. Once I get some more weapons and spells into the game you will be able to trade up to continue skill increases.