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Open the garage from the main menu. Swipe through the four cars, tap the one you want, then switch to the paint tab to apply a colour. Each car keeps its own paint choice.
Chasebreak saves your best score, completed runs, selected car, paint colours and settings locally on your iPhone. There is no account and no cloud save, so deleting the app removes that data.
No. Chasebreak plays entirely offline and makes no network connections at all.
They change how much pressure the police put you under, and they pay out at different score multipliers — the harder the mode, the higher your score climbs.