How to Play Agar.io

Last Updated: January 16, 2023

Agar.io (Agar-Ee-Oh) is an online multiplayer game where you control a "cell" and become the biggest by eating other players' cells and the food. Creating your own techniques for playing/being successful in Agar.io will greatly benefit you during the gameplay. Developing your own techniques will also give you a higher chance of breaking down the leaderboard or getting onto it!

Part 1

Part 1 of 4:

Getting Started

1
Using any web browser, type in the game's URL: http://agar.io/
- Alternatively, you can look up "Agario" or "Agar.io" on search engines such as Google, Yahoo!, or Bing.
- If you are looking to play the mobile version of Agar.io opposed to the website version, you may download the app from the app store (Google Play, Apple's "App Store", Etc.) located on your smartphone.
2
Choose you username in the blank field. You can create a custom name or go with one associated with existing skins. Typing in certain usernames will give you a certain cell "background" or "skin". Skins don't have any effect on your gameplay as they are strictly for cosmetic purposes. If you pick a custom name, you won't be able to get a skin unless you've logged in and obtained a "Premium Skin".^{[1]
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Part 2

Part 2 of 4:

Learning the Controls

1
Learn how to move your cell. Moving your cell is what you should master first, since it will be the main aspect of your technique. To move your cell, simply move around your mouse/mouse-pad and your cell will follow the on-screen pointer. The bigger you are, the slower you move and the easier it is for someone to catch up to you.
2
Learn how to shoot off "mass". This allows your cell to shrink itself so it can move faster, or to share your mass with others. To shoot off some of your cell's "mass", simply click the W on your keyboard. The mass will fire in the direction of which your pointer is on-screen.
- Speed will be an amazing tactic to add to your custom technique.
3
Divide your cell when needed. If you'd like to boost yourself to catch up to someone or eat someone smaller than you, you are able to divide your cell. Dividing your cell will shoot out half of yourself forward in the direction of your pointer, thus eating any smaller cells in your direction.
- This will take a bit of practice and patience.

Part 3

Part 3 of 4:

Understanding How the Game Works/Techniques

1
Understand that Agar.io is like a food chain. The lower you are in this food chain, the more likely it will be for you to lose the game/be eaten. The size of your cell is very important, you must pay close attention to who you try to pick a battle with.
- Bigger cells have the ability to eat the smaller cells. Find a way to knock them down to size, or find out how to grow fast enough to eat them first.
- If you are equal to, or very close to, the size of another cell, you cannot eat each other.
2
Take down the leaderboard! In Agar.io, spikes spawn throughout the entire map. Use these spikes to take down larger cells that are chasing you. Shooting out mass into these spikes with the 'W' key will make them grow to a certain point. Once they pass the point, the spike will split itself and throw it into the direction you are aiming.
- Successfully hitting the larger enemy and making them explode will most likely cause them to run away in fear of being eaten, thus saving yourself and giving you the opportunity to eat them and grow drastically!
3
Protect yourself. If you are greater than the Viruses and/or "Green Spikes", in size, going inside of it will make you explode into mini-cells, giving everyone around you the opportunity to eat even quicker.^{[2]
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- If you are less than or equal to the size of the spike, you will be able to "safely" hide inside of it.
- Although larger cells are able to eat you if they go inside of the spike, it is unlikely that they will, due to the fact that they will split in to tons of tiny cells, ultimately risking them losing the game.
4
Take chances. If you find a prey to eat, go ahead and eat it, using multiple techniques on this page. Just make sure he is considerably smaller than you.

Part 4

Part 4 of 4:

Using Alliance/Team Techniques

1
Consider teaming up, at least temporarily. The point of the game may be to eat anyone and everyone to survive, but there are still people in the game that are willing to team up with you. Usually, feeding someone your mass by pressing the 'W' key will lead to them thanking you by helping you grow as well. This may also result in them helping you eat other cells as you play the game.
- Typically, an alliance will not last very long. Many people who form alliances will only do it temporarily; They'll wait until they want a different teammate or until they get big enough, and then they will eat you.
- Permanent alliances are very rare, be cautious.
- You can press the spacebar key to give a big chunk of your cell to someone. just sure you aren't bigger than them. then accidentally eat them.
2
Investigate long-term and larger alliances. Forming an official alliance between multiple people will take much more work. There are many forums that people use to have conversations between the Agar.io community, share skins, and most importantly, form alliances. Use the forums to your advantage for creating large alliances by making threads about a team you've created.
- Inform everyone of what your Alliance's name is once you've came up with one. Certain names will attract more players to your clan.
  - Avoid Inappropriate, vulgar, or any alliance names that give away your personal information.
- Look around the internet and/or other threads, for Alliance names that have already been used. Copying other's alliance names will only bring bad reputation to your alliance.

Community Q&A

Question

How do we eat a cell?

Community Answer

You eat cells every day, as fruits and vegetables all contain cells and so is meat. In agar.io; however, you have to be a seeable bigger size than the opponent and get close enough to consume. If the opponent is smaller than half your size, it may be enough to get close to the opponent and press space to split consuming the opponent. However you will be two cells for a while whether you do it right or wrong.
Question

How do you shoot into the spike to a large cell?

Community Answer

Press W to get rid of some of your mass and shoot in the direction of a large cell. When the spiky cell has reached maximum growth, it will split in the direction of the big cell, making the big cell split.
Question

After dividing yourself, how do you get back together?

Yol Verinrii

Community Answer

Just wait for a few seconds, your sections will naturally join back together on their own. While waiting to join back together, find a safe place to wait, and avoid larger players, as you’re going to be be more vulnerable.