Add "Surfer" achievement to Space Invasion. Balance "Shield Miser" in Space Invasion. Fix disappearing ghost bug in Racer Extend waypoint limit to 8 in Racer Lengthen ghost tracking interval to improve performance in Racer. Allow users to view score between turns now that HideMission() is fixed.

this seems... um.. random

Bee: + don't explode on time expiration but fall instead (still explodes on impact) * avoid side-effects by removing flag sharing between different bees.