Yeah the Defence Mortar, Concussion and Energy Shield Barrage codes are not here, due to them being uh. Later than 5.1 release. Two of these codes are available from the Encounter in Omicron Iota (first two mentioned of the three) at drop rates of 2.25% and 13% respectively, and the Energy Shield Barrage is in Sigma-15, replacing the old Rheinland Military encounter of Plasma Mortar drop (Same Encounter location, similar fleet composition, just has had the Plasma Mortar drop removed and replaced with Energy Shield Barrage Code).
All of the Code Spawnrates have changed to Code Drop rates, meaning that they are possible to acquire from every wave, but have a chance of drop rather than a guaranteed from specific wave. This was also a change to encounter code farming that came long after 5.1, likely changed because it was rather easy to roll an encounter for a single specific wave for a guaranteed drop. Now you sometimes have to murder npcs for several hours to get the drop instead. Some became easier to get, some became harder.
![[Image: LBD7JlK.png]](https://imgur.com/LBD7JlK.png)