LETMECOOK grants 1 Thunder Egg plus a 30-minute boost multiplier. Community sources disagree on the boost target: GameRant, Sportskeeda, and ProGameGuides read it as a 2x Money boost, while Dexerto and Joytify report 2x Money in a slightly different wording.
SERGIOVERSE grants 1 Scratch Egg plus a 30-minute boost multiplier. Boost target is split: 4 outlets say 2x Money (Dexerto, LDPlayer, Joytify, Beebom) and 3 outlets say 2x Corn (GameRant, Sportskeeda, ProGameGuides).
Both codes are case-sensitive and gated behind the tutorial completion. The ticket icon is in the top-left of the in-game screen after the first PIT fight.