Agar.io

Agar.io is a game played by Markiplier.

Game Information
Agar.io is a 2D web browser-based game that features gameplay similar to Spore, where the player starts of as the smallest cell and require pellets called "Agar" scattered around the map to expand in size while evading larger players who can devour smaller ones, but are significantly slower. Aside from basic mouse movement, players also have two additional commands. The first lets them split by two, either used for evading bigger players or to catapult one of their halves to devour a nearby opponent. The second ejects small spheres from the player's cell, allowing it to relieve excessive weight in order to evade an opponent or to provide an assistance to another by giving them their cells. Green spheres can be found floating around the map. These spheres cannot be devoured and if the player's mass is greater that the former, coming into direct contact with it will cause the player to decimate into numerous spheres, making them an easier target for others. They serve as obstacles for bigger opponents and a manner of defense for smaller ones.

The game's practically endless and its only objective is to evolve and survive as long as possible. The game also features a multiplayer with three teams separated by color. When starting the game, the player can name themselves whatever they wish. Their cells can have a variety of skins of practically anything if their name correlates with a significant symbol, icon, flag, planet, etc. The game is notable for its simple addictive gameplay.

Episodes

 * 1) WARNING: ADDICTIVE
 * 2) MARKIPLIER'S CUSTOM SKIN!!
 * 3) CALL ME SMITTY WERBENJAEGERMANJENSEN
 * 4) HOW TO BE 2nd BEST!!
 * 5) MARKIPLIER PLAYING WITH FANS!!
 * 6) BEWARE THE MARKIFART
 * 7) LUCK O' THE IRISH

Trivia

 * The game got its name from Agar, a substance found in cell walls of certain algae.