Board Thread:Questions and Answers/@comment-6016076-20140719100312/@comment-24826500-20140806002600

PlantShielder wrote: 210577bloons wrote: PlantShielder wrote: So, the HP of a blimp doesn't change until it appears...Alright... Also, you need to reach Freeplay Mode for blimp health to increase. But I always do Freeplay Mode on Easy! ._.

It only counts Hard Mode Freeplay then... No, that's not how it works. You need to reach Freeplay AND see the ZOMG appear in order for its health to go up. Check Freeplay Mode for more info.