Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you acknowledge and agree that supercell may update the service and supercell games , with or without notifying you . 

```
. OPTIONS: ['Unilateral termination' 'None' 'Choice of law' 'Limitation of liability'
 'Arbitration' 'Jurisdiction' 'Content removal' 'Contract by using'
 'Unilateral change'].