At this mode the player's points for each kill will increase or in other case (when you die) your points will decrease by the amount of the limit.e.g.: if you play 1 euro limit and you kill your opponent, you will gain 1 euro while this amount will be counted off from the account of your opponent(-rake).
Types of limits:

The servers are divided according to the limits, which define the value of obtained credits.
The limit is marked in the server name (for example 1 dollar DM Server)