We have 1 cheats and tips on Android. If you have any cheats or tips for Doctor Who: Legacy please send them in here.
You can also ask your question on our Doctor Who: Legacy Questions & Answers page.
Gems and crystals are stored locally on your device.
1) Collect a lot of them.
2) Backup your game data using backup software like Helium or adb backup.
3) To be safe, make sure you choose the cloud backup in the game. - This does not backup your crystals and gems.
4) Spend away all your crystals and gems.
5) Backup to the cloud again in game.
6) Restore your data from number 2.
7) Repeat steps 4-6 as long as you want.