Pretty much, this is where I keep track of the .io games. With a description (as umbiased as possible) and an opinion in it. (ooohhh booooyyy) Here we go
Agar.io Simple game where you're a cell who eats smaller circles to grow and avoid larger circles. Servers are good and shouldn't be too laggy, however it is apparent in some places
[opinion] Okay game, ruined by the uhh, names. Yes. also I cannot connect to any server well, the best ping i can get is 300ms on the china server. Its also descended into pay2win so thats unfortunate.
Slither.io A game like Snake, but multiplayer. if a snake runs into your body, they die, if you run into anothers, you die. Simple, but isn't as linear as Agar.io. Which works out fine. People have had trouble with servers though.
[opinion] Laggy game, cool lconcept, however not too original and its pretty much impossible to get a good connection and play properly.
Diep.io A game about tanks, Simple graphics like agar.io easy to start playing, however the game adds depth with different classes and stats you can spec into, without obstructing play very much. So you can be pretty good at playing.
[opinion] Semi-laggy, but playable. Pretty nice game with mechanics that can offer more and more. Servers are okay in my opinion.
Wilds.io Wilds.io is a team-based game, actually. If you have a good network speed, you might as well be able to play it. In Wilds.io, you are a guy who needs to kill stuff.
Tips for Wilds.io:
-Your circle is green, and consists of a set amount parts. the parts are your health. If you're hit, one piece of your circle disappears. -Kill the guys with red circles. -In the leaderboard, the guys who have a brown border are your teammates. -People tend to rage if you steal their top place in the leaderboards.
~Donated by Feisar
To the serious tips: -Let someone somehow slip and fall straight on their face using the shockwave skill. Some guys tend to be quite weak and are screwed. -Dying causes you to lose half of your score.
Wings.io No description available cause it wont load
Supersnake.io No description cause I'm lazy
Feel free to add to this list, suggest changes to the short descriptions. Might add forum thread links to these later.