Impacts version 0.9.30 and above
Some players may have experienced an issue where Special Serum could no longer be used in ways it could be previous to this version.
In 0.9.30 we made a change to the Special Serum to address bugs it had created for some players. The Special Serum had previously worked on Producers, but we realised this had been allowing players to unlock items on their board earlier than the game logic intended, causing bugs with their game. The Special Serum was also able to work on lower levels of itself, which meant you could potentially waste it. As a result, we've updated the Special Serum to avoid these issues.
The Special Serum has lots of uses. You can use it on normal items on your board, as well as Event Producers like the Vet Bag, Coins, Leaves, Energy, other Boosters, and Chests.
We appreciate this change may cause some frustration. We apologise that we were unable to communicate this change in advance.