Before you start a level, you can select and activate
![](https://d2duuy9yo5pldo.cloudfront.net/matryoshka/f5f7b72a-9506-4a19-8f33-637c234f408b-2t.png)
Boosters.
If you don't have any
![](https://d2duuy9yo5pldo.cloudfront.net/matryoshka/60e76476-df12-43e8-990e-532927de029a-2t.png)
Boosters, you'll be asked if you'd like to use
![](https://d2duuy9yo5pldo.cloudfront.net/matryoshka/9668b4ed-47ff-4337-98f2-21232c695193-2t.png)
Coins to purchase a Booster pack.
You can use
![](https://d2duuy9yo5pldo.cloudfront.net/matryoshka/bada10c1-b690-494b-9783-1b24db1be8f4-2t.png)
Bonuses during gameplay. If you don't have any, you'll be asked if you'd like to use
![](https://d2duuy9yo5pldo.cloudfront.net/matryoshka/5b70bfa8-8ec7-428f-870d-207ceb2eb491-2t.png)
Coins to purchase a Bonus pack.