Is it really real time?
Yes. If Jem says he'll be an hour, it's an hour, and you get a notification when he's back. Chapter One plays out over about a day. After your first ending, Fast mode lets you replay without the waits.
What happens if I choose wrong?
Jem can die. When he does, you can rewind to your last choice and try again, or start the whole story over.
How much does it cost?
£1.99 for the app, which includes Chapter One. Chapter Two is a £1.99 in-app purchase. There are no ads and nothing to buy to skip the waiting.
Is it scary?
It's a horror story told in text messages: tense and creepy rather than gory. It's rated for players aged 13 and over.
Does it need an internet connection?
No. The whole story is on your phone and plays offline. Your progress stays on your device.
Is there an iPhone version?
Sundown is on Android first. An iPhone version may follow.