More Lives

"Don't let those bloons win! Stay in the fight by instantly adding 200 lives to your game. This one-time addition applies to your current game only."

- BTD5 description of the More Lives Premium Upgrade.

This Premium Upgrade exists in Bloons Tower Defense 4 and Bloons Tower Defense 5 and also Bloons Tower Defense 5 Deluxe. It will give you 200 extra lives during a game. This is useful if you do not want to lose the game and you have only a few lives to spare. It can also let an MOAB through easier with Healthy Bananas.

It costs 3 in BTD4, 4 in BTD5 and 100 in Bloons Tower Defense 5 Deluxe.

Appearance
The upgrade icon appears to be a red heart with a green plus symbol in front of it.