Encourages players to play as much as possible to get their money's worth.
"They recently introduced ‘Egg Inc. Ultra’, an optional monthly subscription with two tiers"
"The game has a whopping two battle passes, an actual "Battle Pass" for competition rewards, and a "Monster Pass" for other rewards. These have paid versions which need to be renewed roughly every month to get the full rewards from them."
"Has a subscription system that rewards players with a rental supercar as of recent update."