If you spend enough time in the game, you may find caches on the map. These are small objects that you can tap/click to open a window with a reward that can be obtained before the cache disappears.
You can open a cache:
- With special keys that you should collect
- By paying with rubies or coins.
You can find cache keys:
- In certain locations,
- In mini-games
- By fighting monsters
- By completing an anomaly level or by banishing an anomaly.
Caches may contain:
- Tools,
- Weapons and items for summoning monsters,
- Special collection items and rare assemblers.