The "Genetic Mastery" Timed Research quest, a free component of Pokémon Go's Go Fest 2026: Global celebration, presents players with a crucial decision: a path leading to either Mega Mewtwo X or Mega Mewtwo Y. This research is only available during the Go Fest event hours, from 10 AM to 7 PM local time on July 11th and 12th, and must be completed by 7 PM on July 12th to avoid losing out on its rewards.
'Genetic Mastery' Quest Steps and Rewards
The quest begins with general tasks and rewards. Step 1 offers 2026 XP, 2026 Stardust, and a Bouffalant encounter. Step 2 requires spinning PokéStops 10 times, using a Fast TM, and using a Charged TM, yielding 26 Gastly Candy, 26 Gastly Candy XL, and a Gengar encounter. Upon completing Step 3, which involves catching 20 different species, hatching two eggs, and performing a Mega Evolution, players will receive 2026 Stardust, three Rare Candy, and a Tropius encounter. It is after this third step that the critical choice between Mega Mewtwo X and Mega Mewtwo Y must be made.
The Mega Mewtwo X Path
Choosing the Mega Mewtwo X path for Step 4 involves catching three Psychic-type Pokémon, making 10 Curveball Throws, and completing six Field Research Tasks. The rewards for this step include 26 Mewtwo Candy, 300 Mega Mewtwo X Energy, and a Mewtwo encounter. Step 5 requires players to Mega Evolve Mewtwo, power up 10 Psychic-type Pokémon, and win three raids with unique Pokémon species, granting 2026 XP, 2026 Stardust, and six Mewtwo stickers. The final Step 6 consists of claiming rewards, culminating in an Elite Charged TM, 26 Mewtwo Candy, and three Mewtwo Candy XL.
The Mega Mewtwo Y Path
Similarly, the Mega Mewtwo Y path for Step 4 includes catching three Psychic-type Pokémon, making 10 Curveball Throws, and completing six Field Research Tasks, with identical rewards: 26 Mewtwo Candy, 300 Mega Mewtwo Y Energy, and a Mewtwo encounter. Step 5 mirrors the Mega Mewtwo X path: Mega Evolve Mewtwo, power up 10 Psychic-type Pokémon, and win three raids using unique Pokémon species, yielding 2026 XP, 2026 Stardust, and six Mewtwo stickers. Step 6 also provides the same final rewards: one Elite Charged TM, 26 Mewtwo Candy, and three Mewtwo Candy XL.
Choosing the Best Path
While both Mega Mewtwo forms are powerful, the guide recommends choosing Mega Mewtwo Y. This is because Mega Mewtwo Y stands as the top-tier Psychic-type attacker and one of the best attackers in the game overall, boasting a Total Damage Output (TDO) of 810 compared to Mega Mewtwo X's 762.9. Its effectiveness is further amplified when considering the damage boosts it provides to other Psychic-type Pokémon during raids. Although Mega Mewtwo X is still a formidable Pokémon, its Fighting-type typing does not offer a significant advantage over Mega Mewtwo Y, especially when considering that Mega Lucario is generally a superior Mega Fighting-type choice. Furthermore, Mega Mewtwo X's dual typing means it does not resist Dark-type attacks, a benefit typically seen in Fighting-type Pokémon.
An alternative consideration for decision-making is the availability of Mega Mewtwo X and Mega Mewtwo Y in raids. Mega Mewtwo X is featured on Saturday, July 11th, and Mega Mewtwo Y on Sunday, July 12th. Players might opt to choose the Mega Mewtwo form from the research that aligns with the day they are not focusing on raiding for Mega Energy, thus potentially saving time and resources. For instance, one player may choose Mega Mewtwo Y from the research to focus raiding efforts on obtaining Mega Mewtwo X energy.