A* Tanks will be a game mode where all tanks in the game will be at the same level. This game mode will give players that have just spawned a greater chance of surviving, unlike FFA.
Before spawning, players will be presented with a panel where they can decide which tank they would like to play with, and another panel where players decide what aspects of the tank they would like to upgrade. There will also be a panel where players decide what they would like to call themselves. Players can choose any tank in the game, from the Tier 1 Tank to the Tier 4 tanks, and players will be given 33 upgrade points, so a tank that spawns will be the same as a Level 45 tank, except they have 0 points. Alternately, players can make their own custom tanks and choose upgrades using the Tank Builder.
When a player spawns, he will spawn near the sides of the map (like FFA) and he will have 0 points. There will be no levels, since they are irrelevant in this game mode. Polygons will appear as usual and will still award points to the players that kill them. Bosses appear as usual in this game mode. When you kill a player, you will get 25000 points.
In this game mode, the leaderboard will show the top 10 players, their name and score, and the tank they are using.
The game mode tests both the skills a player has when using the tank, and the player's ability to decide on the best combination of tank and upgrades. Players who make the right decisions will have a much greater chance of being successful in this game mode. Use advice from advance players and the diep.io Wikia. Also gaining experience form your own attempts at success in this game will help.