‘Genetic Mastery’ is a branching Timed Research quest released in Pokémon Go as part of the Go Fest 2026: Global celebrations! Since this event is completely free for everyone, this means we all have the chance to work our way to either a Mega Mewtwo X orMega Mewtwo Y. Though this does create the question, which is the best ‘Genetic Mastery’ Choose Path choice – Mega Mewtwo X or Mega Mewtwo Y? I’ve taken a look into that for you down below, along with listing all of the ‘Genetic Mastery’ Timed Research quest steps and rewards.
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‘Genetic Mastery’ quest steps and rewards
‘Genetic Mastery’ Timed Research is a Go Fest 2026: Global quest released to all players during the event itself, so you need to log into the game between 10am to 7pm (local time) on either Saturday 11th or Sunday 12th July to unlock it. Alongside this, there are two other important facts you need to remember.
Firstly, you must complete this quest before 7pm on Sunday 12th July or it will vanish forever. No easy Mega Mewtwo for you if time slips you by!
Secondly, this is a branching quest which means you need to pick a path! The options are Mega Mewtwo X and Mega Mewtwo Y, with the choice being made after quest step number three. This choice can not be changed after it’s made, so it’s a good idea to figure out what is the best path choice for you before making it. Don’t worry though, I’ve taken a look at just that further along in this guide.
For now, let’s take a look at the opening quest step and rewards for ‘Genetic Mastery’. Just be wary of spoilers!
‘Genetic Mastery’ Step 1 of 6
Reward: 2026 XP, 2026 Stardust and Bouffalant encounter.
‘Genetic Mastery’ Step 2 of 6
Spin up Pokémon 10 times – 1 Fast TM
Use a Fast TM – 1 Charged TM
Use a Charged TM – 3 Hyper Potions
Reward: 26 Gastly Candy, 26 Gastly Candy XL and Gengar encounter.
‘Genetic Mastery’ Step 3 of 6
Catch 20 different species of Pokémon – 1 Incubator
Hatch 2 Eggs – 100 Mega Gengar Energy
Mega Evolve a Pokémon – 1 Star Piece
Reward: 2026 Stardust, three Rare Candy and Tropius encounter.
‘Mega Mewtwo X’ path for ‘Genetic Mastery’ Special Research
Below lies all of the challenges and rewards for the Mega Mewtwo X path in the ‘Genetic Mastery’ Timed Research quest in Pokémon Go. Remember: your path choice is permanent, so you must make your choice carefully and this one will lead you to getting Mega Mewtwo X. Spoilers lie below.
‘Mega Mewtwo X’ Step 4 of 6
Catch 3 Psychic-type Pokémon – 2026 XP
Make 10 Curveball Throws – 26 Great Balls
Complete 6 Field Research Tasks – 2026 Stardust
Reward: 26 Mewtwo Candy, 300 Mega Mewtwo X Energy and Mewtwo encounter.
‘Mega Mewtwo X’ Step 5 of 6
Mega Evolve Mewtwo – 2026 Stardust
Power up Psychic-type Pokémon 10 times – 26 Ultra Balls
Win 3 raids using a team of all unique Pokémon species -1 Super Incubator
Reward: 2026 XP, 2026 Stardust and six Mewtwo stickers.
‘Mega Mewtwo X’ Step 6 of 6
Claim reward – 2026 XP
Claim reward – 2026 Stardust
Claim reward – 2026 XP
Reward: one Elite Charged TM, 26 Mewtwo Candy and three Mewtwo Candy XL.
‘Mega Mewtwo Y’ path for ‘Genetic Mastery’ Special Research
Here you’ll find all of the challenges and rewards for the Mega Mewtwo Y path in the ‘Genetic Mastery’ Timed Research quest in Pokémon Go. Taking this path will help you add Mega Mewtwo Y to your Pokédex. Don’t forget, your path choice is permanent! Spoilers lie below.
‘Mega Mewtwo Y’ Step 4 of 6
Catch 3 Psychic-type Pokémon – 2026 XP
Make 10 Curveball Throws – 26 Great Balls
Complete 6 Field Research Tasks – 2026 Stardust
Reward: 26 Mewtwo Candy, 300 Mega Mewtwo Y Energy and Mewtwo encounter.
‘Mega Mewtwo Y’ Step 5 of 6
Mega Evolve Mewtwo – 2026 Stardust
Power up Psychic-type Pokémon 10 times – 26 Ultra Balls
Win 3 raids using a team of all unique Pokémon species -1 Super Incubator
Reward: 2026 XP, 2026 Stardust and six Mewtwo stickers.
‘Mega Mewtwo Y’ Step 6 of 6
Claim reward – 2026 XP
Claim reward – 2026 Stardust
Claim reward – 2026 XP
Reward: one Elite Charged TM, 26 Mewtwo Candy and three Mewtwo Candy XL.
Should you choose Mega Mewtwo X or Mega Mewtwo Y?
I recommend choosing Mega Mewtwo Y, because while both Mega Mewtwos are strong, Mega Mewtwo Y beats X to the punch. Not only does it sit at the top of the Psychic-type attackers list, but it’s one of the best attackers in the game overall. (Mega Rayquaza’s crown remains safe for now.) This is all because Mega Mewtwo Y has an incredible TDO (Total Damage Overall) of 810 compared to Mega Mewtwo X’s 762.9. Since it’s a Mega and will boost the attack of other Psychic Pokémon, you can only imagine the amount of damage a raid team with a Mega Mewtwo Y or two could do!
Now this doesn’t mean that Mega Mewtwo X isn’t useful. Far from it, as you can see by its TDO, this is still an incredibly strong Pokémon. You may think that being part Fighting-type will give Mega Mewtwo X an edge against Y, but sadly it doesn’t. The first problem is the obvious: if you’re going to use a Mega Fighting-type, then the best choice will always be Mega Lucario (or Mega Lucario Z when it’s released). The second is that, because of its dual typing, Mega Mewtwo X doesn’t resist Dark-type attacks like most Fighting-type Pokémon. When you combine these two facts with Mega Mewtwo Y outstripping Mega Mewtwo X in the Psychic-type rankings then the choice here is clear.
Mega Mewtwo X and Mega Mewtwo Y.
There is, however, another factor you can use to make your decision. Considering how many Super Mega Raids it will take you to get enough Mega Candy to Mega Evolve Mewtwo (and the fact that X and Y require different Candy), you can base your choice around getting the Mewtwo you’re not raiding for. This can either be because you can’t play Pokémon Go on one of the Go Fest days or simply cut down on the amount of time (also money) you spend raiding.
If this is the case for you, then here’s when each Mewtwo is available:
Mega Mewtwo X – Saturday 11th July
Mega Mewtwo Y – Sunday 12th July
Personally, I’m going to get Mega Mewtwo Y from this quest and then focus my raiding on Mega Mewtwo X. I have a strong Lucario which I’m very fond of, so fancy giving my strongest Mewtwo a power boost will balance my team out. Hopefully I’ll get another Mewtwo Mega Energy to add X to my Pokédex eventually.
How ‘Genetic Mastery’ Timed Research quest works in Pokémon Go
‘Genetic Mastery’ is a Timed Research quest released as part of Go Fest Global: 2026 and, since this event is entirely free, it’s available to everyone! There is a catch though. (Because of course there is.) Since this is a Timed Research quest, you must complete it before Sunday 12th July at 7pm (local time) when the Go Fest Global event for this year ends. Let this deadline slip you by and you’ll lose the chance to get an easy Mega Mewtwo X or Y.
As I mentioned, this quest is available to everyone and it should automatically unlock when you log into Pokémon Go during the Go Fest Global: 2026 event hours. (10am to 7pm local time on both Saturday 11th and Sunday 12th July.) If it doesn’t, then you may have to close and reopen Pokémon Go a number of times. This should force the game to load the quest. It’s also worth checking whether Pokémon Go needs an update.
Finally, it’s also worth remembering that ‘Genetic Mastery’ is a branching research quest. This means you’ll have to pick between two paths – Mega Mewtwo X or Y – with this choice determining some of the rewards you’ll receive. This choice can not be changed, so make it wisely. Aside from this, the quest will work exactly like how every other Pokémon Go quest does – complete your challenges and collect your rewards until it’s all over and done with.
Best of luck completing Genetic Mastery! Don’t forget to complete A Thunderous Discovery, enjoy every habitat hour and battle both Mega Mewtwo X and Mega Mewtwo Y.