And one additional advantage: in a game I worked on our fixed point class had a fractional part that is in base 10 and it was in thousands (0b1 == 1/1000). This

And one additional advantage: in a game I worked on our fixed point class had a fractional part that is in base 10 and it was in thousands (0b1 == 1/1000). This was making fractional numbers add up in the way you expect them in base 10 For example if you have 10 buildings that gives 0.1 crystal everyday, you would gain exactly 1 crystal per day. In the user interface you wouldn't see something like "0.999 crystal per day". And it is not just for pretty tooltips, if there is a game logic that checks ">= 1.0 crystal per day" then that condition is guaranteed to be satisfied after 10 crystal buildings