# Simulation

Den lets you simulate transactions, so you can be confident in the outcome before you execute. Simulations show you if a transaction succeeds, how state changes, and what event logs are emitted.

<figure><img src="https://731861436-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPw0mN04sXbA90tnBcjau%2Fuploads%2FhaHRZsVOsCJ4ndNLAoP0%2FScreen%20Shot%202023-01-08%20at%209.33.51%20PM.png?alt=media&#x26;token=10d744e8-2195-47b2-ae8f-6543dbb733a7" alt=""><figcaption></figcaption></figure>