What is a BTS?
A BTS is similar to TS. Some rooms are free for kills, some are timed.
Basically you hunt as many monsters as possible for a bigger prize reward of gold. If you miss monsters then you'll receive a lesser amount of gold reward.
What you'll need:
1. Dowsing rods, these are bought from Malcolm at Nosvillie. You should keep a stack (99) or more but maybe less if u feel lucky.
2. BTS stones + the required materials to create the BTS stone.
3. Depending on what BTS you're doing, you may want a party or you could solo it. If you solo it I recommend you get some defence/attack enhancement potions and food/HP potions.
You'll also want a nice amount of resistance:
Lvl 65-70 BTS = Dark resistance
Lvl 60-67 BTS = Light resistance
Lvl 55-60 BTS = Dark resistance
Lvl 50-55 BTS = No element
How to start:
1. Double click the BTS stone. Hover your cursor over a selected icon that fits your level and move to the map it displays.
2. When you're at the required map to begin the BTS, it's time to use the dowsing rods. When you double click a dowsing rod it helps you locate where you are allowed to create the BTS.
When using a dowsing rod you'll have two symbols.
The "?" represents that the dowsing rod doesn't know where the location is. This means you'll have to move further into or around the current map to see if you can get a mark on the location.

When you receive a mark on the location, the below symbol will display:
Keep moving to where the arrow points to. Eventually when you use another dowsing rod you'll have found the location, when you've found the location the below will display:
Now create the BTS by opening the BTS stone, click "produce" on the correct BTS for your level and map.
Click the BTS to begin.
What to do:
Depending on the BTS you choose, you may have to just fight from room to room. but also there are two or three last rooms that require around 5-10minutes before they summon monsters. Open these rooms first, back-track to the first room then kill those and then move forward.
Rewards
Again, depending on the BTS you choose you may receive a large or small reward.
The level 65-70 BTS gives 47k a character. The lvl 60-65 is around 35k. Etc.