Due to the massive amounts of grinding required to obtain Trade Stones, the last one needed by the chat to complete the Pokédex was placed in the overworld, replacing one of the stacks of Apricorns on Route 34. The developpers forgot to edit the item quantity however, resulting in Adam receiving 25 Trade Stones rather than just one.
"You need a Mining Pick to mine." Explanation A phrase that appeared upon inspecting cave floors and rock walls without mining equipment, and as such became memetic due to its repeated use, especially as a result of the first hours' chaotic inputting.
Torkoal's war crimes Explanation Torkoal knew the Gas-type move "Mustard Gas", resulting in jokes about it committing war crimes.
"It would have killed in Naljo." Explanation Libabeel's ability, "Naljo Fury", gave it a significant STAB bonus when in the Naljo region, causing players to frequently remark that attacks which barely failed to finish off the opponent while in other regions "would have killed in Naljo".
Gliscor was never used before. Explanation While Gliscor was previously used during Blazing Emerald, that run went so badly and left such a sour memory to many that players jokingly claimed that Prism Anniversary was the first time Gliscor was used in a run. Even while actually facing against the Blazing Emerald protagonist, who did have Gliscor on his team, player kept insisting that Adam's Gliscor was the first and only.