It is the amount of time spent in the game, which also increases over time, but there are also several point multipliers and bonuses made available by completing different things or by visiting the moustache screen. For example, V0id has recently been able to get such a ridiculous score because he has played Ghost Pop until becoming a pro, because completing Ghost Pop earns you an instant 10 billion points. Check the minigame descriptions for the rewards.
 "Epic Battle Fantasy 4"){kind=icon}
 "Pinata Hunter 2"){kind=icon}
 "Just Trolling"){kind=icon}
It is the amount of time spent in the game, which also increases over time, but there are also several point multipliers and bonuses made available by completing different things or by visiting the moustache screen. For example, V0id has recently been able to get such a ridiculous score because he has played Ghost Pop until becoming a pro, because completing Ghost Pop earns you an instant 10 billion points. Check the minigame descriptions for the rewards.