Instant Battle is a gamemode with several aspects, the prominent one being the player starts at level 45.
Other aspects:
The immunity time is infinite.(the time you get when you spawn)
There are clans, of three diep colors. You can join a clan by selecting an option at the top left corner of the screen. You can also click ignore. The clan colors are purple, green, and blue. Players with no clan are red. A clan is like an optional team with no base. The standalone leader, along with the leader of each team, are represented by a dot of there respective color on the minimap.
Half the map is like maze. The bottom right corner is maze, and so is the top left corner.