Arena

Arena is a game mode where the player must solve a set of boards within a limited amount of time. To start an arena, you need to find or buy an arena ticket. There are 10 types of arenas, each with 8 levels:

Type	Speed Speed Speed NG No flags Efficiency High difficulty Random difficulty Hardcore Hardcore NG Endurance Nightmare 10%
Level	L1 L1 L2 L3 L4 L5 L6 L7 L8
Mode	Classic Classic Elite
Description	Finish 5 games with a difficulty of 5-10 within 15 minutes.
Base reward	+1 +500 +50 +10 +1

Arena points is the sum of the highest level of each type that you have completed, for a maximum of 80 points.

Arena tickets can be found while playing any game, they appear as golden cells. There are a few rules:

They can be found in all game modes.
The level of the ticket you find matches the number of the cell.
You do not need to win the game to get the ticket.
It requires a higher rank to get higher level tickets, as shown on the ranks page.
Tickets cannot be found on openings.
To get a ticket there is a restriction that the mine density of the board must be less than or equal to 33%. This is to prevent ticket farming on extremely high density boards that guarantee 8s. Any normal game will have less than 33% mine density, even most high difficulty boards.

The chance of a cell being a ticket depends on the number:

1	0.006% 0.005%
2	0.003% 0.002%
3	0.003% 0.002%
4	0.004% 0.003%

5	0.02% 0.01%
6	0.1% 0.05%
7	1% 0.5%
8	100%

Arena ticket drop rate on custom boards depends on the mine density:

Mine density	Drop chance
25% and below	1x
26%	0.8x
27%	0.6x
28%	0.5x
29%	0.4x
30%	0.3x
31%	0.2x
32%	0.1x
33% and above	0%