Once your Lyceum reaches level 3, you can research the Merge technology. This will allow you to merge two identical items of the same rarity and, with some luck, get a single item with a higher rarity and improved stats.
 
Once you research Merge, go to your production screen and open the “Merge” tab in the upper part of your screen. You will see all recipes with at least half of the requirements fulfilled, meaning, those where at least one of the required items has been made.
 
The higher the rarity level you want, the lower the chances of a successful merge. For instance, merging two common items into a rare one has a 100% chance, while merging two epic items into a legendary one only has a 50% chance. If the Merge is successful, the two items you used are removed from your inventory and a single one with a higher rarity is placed instead. If the Merge fails, you lose one of the items you used for it.
 
We’re also currently working on boosters: special items that can be used to improve the merge chances.