Last updated on November 27th, 2025 at 06:17 pm
Jellyfish Aquarium – Pet Game – Simulation Game Review
Jellyfish Aquarium – Pet Game is a Simulation/Word/Lifestyle game from Hiroki Yamada, first launched in 31st October 2015.
It’s rated 4+ and currently has 244+ ratings on the App Store.
What Makes Jellyfish Aquarium – Pet Game Stand Out
Over one million downloads worldwide!
Introducing the 「Jellyfish」 to this already popular game! FREE DOWNLOAD! It's real easy to raise your own pet in this game!!
■Raise your own Jellyfish on your smartphone.
■Watch how cute your Jellyfish moves. It's so soothing and therapeutic.
[Instructions]
This is a virtual pet app where you can raise your very own Jellyfish on your smartphone. It`s so easy to raise. Just feed your pet once every four days and clean its home once a week. This game app is great for kids and people who find RPG's and puzzle games a bit tedious. Try this game out! It's therapeutic, and a great way to kill time!
[Basic Functions]
・It's simple to raise. Just remember to feed you Jellyfish and clean its home.
・Like a real Jellyfish, it moves around in such an adorable way.
・You can call over your Jellyfish by tapping on the screen. Look at how adorable this is!
・You can give your Jellyfish a name. You can give it a new name at anytime.
・Your Jellyfish grows in realtime. The growth of your pet is calculated by every 0.5 second.
・The game records how much your pet has grown since the last time you visited it.
・You can take a picture of your Jellyfish with your mobile device and share it with your friends over various social networking sites.
・The app also can send you notifications to let you know when your pet needs feeding and cleaning.
・You can even transfer your pet's data to a new device so that you can keep the same pet even after you change your mobile device.
・All of these functions are free and do not require any microtransactions!
[Recommended for:]
・people who have always wanted a Jellyfish or already have one and want a virtual Jellyfish to spend time with everywhere and at anytime
・people who love visiting the zoo and aquariums
・people who love raising virtual pets
・people who want a simple game to pass their free time with something fun
This Simulation game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, Jellyfish Aquarium – Pet Game is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 3rd February 2023
Recent improvements include:
- bug fixes.
Download & Availability
Jellyfish Aquarium – Pet Game is available through the official App Store for iOS devices.
Get Jellyfish Aquarium – Pet Game on App Store
Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.
Compatible with iPhone and iPad devices.
Player Experience Highlights
Community Insight:
This game is beautiful the graphics are amazing the soundtrack is beautiful the mechanics are simple and its very easy to come back every day.
Ive had this game for 79 days now and our jellyfish has gotten so bigg and its so adorable! The art is really beautiful and its just so fun guys we promise! It really shows you how consist you can be.
This game is super chill, and you only get ads when you change the water, which you have to do every 3-4 days. We named ours Teacup and he's super cute !! You should definitely check out their other games if you are thinking about getting this. Bye! :3.
So we just wanna say the app is amazing. It is now day 23 with our Jellyfish. We named him Julian, but besides that our friends Jellyfish Moxy died even though she is really depressed about that and stuff. We still think your app is worth all the time. This app is the only pet app we have in our phone that we are not constantly annoyed with the other pet we have on our phone Pet pal paw the game is really annoying. Nothing is free in that game and your pet is always constantly sending you notifications that will literally give you a heart attack because of how loud they are no matter if your phone is on silent or not but with Julians notifications, there are a lot calmer and plus the music in the app helps us calm down from getting annoyed even without the music we still wouldnt be annoyed this app so we just wanna thank you for making such an amazing app.
We love it:) sometimes its can make us feel happy an its like shes real to us.
Ive had him for ten days now, he has been replaced three times, but it doesnt matter. This game is very slowly teaching us responsibility in a way and sorta helping our memory.
Im so surprised how much you have made this Game.
Ours is surprisingly still alive after a week.
This game is amazing! But we got bored of it quickly, many of our jelly fish have died, but thats okay, the good thing about it is that first your jelly fish is smaller, then bigger! Amazing game.
Ive had our Jelly Belly through two tank upgrades, and we hope theres another one soon, as its a pretty tight fit. This is a calming wind-down, with lovely music, soft lighting (that can be changed to suit a mood), and a deep ocean vibe. Simple, no bells, no whistles, justnice.
Im currently on day 120 great time killer.
We have had a jellyfish named butthole and an axolotl named shartface for two years. We feed them every day and would kill the whole world if anything happened to them. Thank you for changing our life.
MY SOOONNNN we DIDNT KNOW THEY COULD DIEE we CHECKED HIM YESTERDAY AND HE WAS ALIVE AND we OPENED IT AND IT SAID HE DIIEEDDD WAHHH.
Its very cute we think the game should add more activities to do with jellyfish very cute game tho (`).
Awwww so cute jellyfishawwwwwwwwwwwww our friends jellyfish died but its ok because ours is alivs feed your jellyfish thank you.
The game basically is an idle game where you feed the jellyfish and clean the water (watch ad) once a day. The jellyfish slowly grows larger as the days pass.
We've had our jellyfish for 108 days now.
This so nice and anti-stress also really cute and relaxing its Fun to switch the lighting around. Its so pretty too, we cant really say anything bad about it.
Great app. Ive had our jellyfish for a little over 3 years now. Very soothing and therapeutic.
After 780 days, our jellyfish is still alive and well, swimming happily in its tank. This jellyfish app has brought us happiness and peace throughout these stressful times. 2+ years with our lil jelly boi and more to come.
Its very relaxing, we also love seeing him grow and feeding him:).
We love this app! Our jellyfish is named Toothpaste and he is awesome! It is so relaxing and the music is perfect.
We got this game and had our jellyfishblobfor months now. We loved her so much. But we wasn't prepared for how sad it made us feel when she died. We're sobbing right now we miss her so much.
Hi. We named our jellyfish Beth 2 in memory of Beth; sorry for your loss Sophie. Our jellyfish is so cute and little and we love her. If she passes always we will be naming our next jellyfish rainbow 2 (in memory of rainbow) Again, sorry for your loss. Stay strong.
We have been loyal to your company for a long time now. Our jellyfish is named Beth. She has been on our phone for 5 days now. We enjoy playing with her and we love wacthing her eat. Only one thing, make it a little harder for the jellyfish to get hungry (also make it harder for the jellyfish to die) Edit: recently, we logged on and saw this pop up, it said, your Beth has died, lets grow the new one. We were offline for like one day. Whenever we log on, we need to take care of rainbow and we cry…. Still a good game tho Edit: Rest In Peace; rainbow.
Jellyfish gives us a moment of zen during our busy and stressful day. A large part of that moment is the music – its perfect. The notifications are 100% needed for us to keep the jellyfish alive and also to get that moment of zen. We would forget about it otherwise. Really well done.
Feed it every day Im happy you should download it.
We love jellyfish they are adorable but our brother has had some bad experience with moon jellyfish.. Anyway we very much enjoy virtual pets but we are very bad and remembering stuff so its kinda balanced. Love it.
Our life is kinda stressful at times and whenever we want to enjoy ourselves during those times games like this help. We play Axolotl and jellyfish from the same creator and both are great for relaxation. Its nice to fall asleep to as well.
Very calming and fun way to have a pet when you cant have a real one , but you still need to care for it . Enjoy it and the music.
Overall we love this app. Most of our days we are alone, so this jellyfish has sure broughten excitement to our life. Right now our little Yuukarin is at 63.361799mm and it has been 31 days. If you are someone who wants a jellyfish but can't buy one get this game totally worth it. Before this we had 4 boring hamsters. We have now given them to our brother in exchange for this jellyfish. Now we have all the excitement of a real jellyfish. Final conclusion: 11/10. Download today and fall in love with your digital jellyfish.
Like most of these ratings, it is a very relaxing game helps with the stress of life. But we also agree that it would be helpful to add more reminders in the game to let us know about our jellyfish pet.
We have this app stored away and we never get reminders to feed our jelly until its dying.
So we've had Jelly Jelly Candy Baby (our jellyfish) for over 247 days and he's now at 365.25 mm. As you can guess we really love the app. But now when we watch Jelly float around we get the feeling he's outgrown his aquarium.. Which makes us sad. We're trying to get to 365 days and we're wondering how big he'll be by then. We think if we where to give any suggestions at all would be to make the aquarium a little bigger. That could easily be possible by unlocking certain days. Ex. You hit 50 days- here's a tank toy. 100 days- can unlock bigger tank and can pan through it. That's it! Great app though.
We've had this app for months now and we love it still. It's really nice to not need to check it every single day – we open it when we get a notification that our jellyfish is hungry, then we feed them and change the water and look at how much it's grown!! It's a low maintenance, adorable application :').
It's a very nice and relaxing game that isn't as demanding as other pet sims. Great selection of background music, though.
"Arnold" is on day 69 right now and this game is amazing.
Great way to remind yourself of how to take care of things.
Love to watch the way our jellyfish moves and it to grow a rate of 0.000016. Lol.
We love watching our jellyfish grow.
User feedback from Apple App Store
App Details
- Version: 5.0
- Size: 126.17 MB
- iOS: 11.0 or later
- Languages: EN, FR, DE, JA, KO, ZH, ES, ZH
- Content Advisory:
- Developer: Hiroki Yamada
Last updated: 3rd February 2023 | Genre: Simulation, Word | Developer: Hiroki Yamada