Apologies if I confused things for you there.
- Your purchase entitles you to all currently available episodes of the game (1, 2 & 3). We use the words "episode" and "realm" to mean the same thing here.
- Episodes 1 & 2 are included in the download file named "The Seven Realms - Realm 1 & 2 (v0.21)". You play through these first, and at the end, a screen will appear, prompting you to create an "Export Save File" that you will then be able to "Import" when you begin Episode 3.
- Episode 3 is included in the download file named "The Seven Realms - Realm 3 (R3-v1.02)"
- When launching Episode 3, you click the button "Import Game", and your Exported Save File will display, and your choices will move across to Realm 3.
- If you are playing on a PC or Mac, the games are automatically downloaded into two different folders. "TheSevenRealms" and "TheSevenRealms-R3"
- If you are playing on Android, downloading Realm 3 after Realms 1 & 2 will overwrite the folder where Realms 1 & 2 are stored, but the save Export/Import I explained above will work the same.
- The reason Realm 3 overwrites the Realm 1 & 2 games is to allow the save export to work seamlessly for players without the need for extra steps. We separated Realm 3 from Realms 1 & 2 as we made various improvements, such as overhauling the user interface, and many players (particularly on Android) requested we do it this way so the game doesn't take up as much space on their device.
I hope this helps. Please let me know if you need anything further clarified.