Map difficulty (BTD6)
Map difficulty is a categorization of the maps in Bloons TD 6 roughly corresponding to the maps' difficulty. The map difficulties are, from lowest to highest difficulty: Beginner, Intermediate, Advanced, and Expert.
The higher the difficulty of a map, the more likely it is to contain features such as short paths, multiple paths, line of sight and placement blockers, removable objects, and unique gimmicks to make the map more challenging.
Effects on gameplay
The difficulty of a map impacts gameplay in several ways.
Monkey Money
Upon completion of a game in standard play, more Monkey Money is granted upon completion depending on the difficulty of the map.
| Beginner | Intermediate | Advanced | Expert |
|---|---|---|---|
| 1x | 2x | 3x | 4x |
Tower and Hero XP
Higher difficulty maps grant increased amounts of Tower and Hero XP when completing each round.
| Beginner | Intermediate | Advanced | Expert |
|---|---|---|---|
| 1x | 1.1x | 1.2x | 1.3x |
Insta-Monkey
Higher difficulty maps grant higher tier Insta-Monkeys upon completion of round 100.
| Beginner | Intermediate | Advanced | Expert |
|---|---|---|---|
| Tier 0-2 | Tier 1-3 | Tier 2-4 | Tier 3-4 |
Note that all Insta-Monkeys rewarded after completing a round greater than 100 are tier 3-4 regardless of map difficulty.
List of Maps by difficulty
Beginner
All Beginner maps are available to play immediately after completing the Tutorial.
| Map | Entrances | Exits | Average RBS | Introduced |
|---|---|---|---|---|
 Alpine Run |
1 | 1 | 32.2 | Version 7.0 |
 Candy Falls |
1 | 1 | 42.4 | Version 17.0 |
 Carved |
1 | 1 | 39.3 | Version 13.0 |
 Cubism |
1 | 1 | 43.3 | Launch |
 End Of The Road |
1 | 1 | 26.5 | Launch |
 Four Circles |
1 | 1 | 36.4 | Launch |
 Frozen Over |
1 | 1 | 35.5 | Version 5.0 |
 Hedge |
1 | 1 | 38.5 | Launch |
 In The Loop |
1 | 1 | 39.1 | Launch |
 Logs |
1 | 1 | 53.1 | Launch |
 Lotus Island |
1 | 1 | 32.3 | Version 19.0 |
 Middle of the Road |
1 | 1 | 40.2 | Version 35.0 |
 Monkey Meadow |
1 | 1 | 29.2 | Launch |
 One Two Tree |
1 | 1 | 38.8 | Version 34.0 |
 Park Path |
1 | 1 | 35.4 | Version 11.0 |
 Resort |
1 | 1 | 47.8 | Version 25.0 |
 Scrapyard |
1 | 1 | 53.4 | Version 31.0 |
 Skates |
1 | 1 | 37.9 | Version 22.0 |
 Skull Tweak |
1 | 1 | Version 55.0 | |
 Spa Pits |
1 | 1 | 48.7 | Version 48.0 |
 The Cabin |
1 | 1 | 30.8 | Version 28.0 |
 Three Mines 'Round |
1 | 1 | 41.7 | Version 51.0 |
 Tinkerton |
1 | 1 | 39.0 | Version 43.0 |
 Town Center |
1 | 1 | 30.5 | Launch |
 Tree Stump |
1 | 1 | 38.9 | Launch |
 Winter Park |
1 | 1 | 36.1 | Version 14.0 |
Intermediate
Intermediate maps may be played after 5 unique map wins.
All maps created in the Map Editor are considered Intermediate for purposes of Hero leveling.
| Map | Entrances | Exits | Average RBS | Introduced |
|---|---|---|---|---|
 Adora's Temple |
4 | 4 | 29.0 | Version 14.0 |
 Ancient Portal |
1 | 2 | 17.8 | Version 45.0 |
 Balance |
2 | 2 | 24.5 | Version 24.0 |
 Bazaar |
2 | 2 | 20.4 | Version 18.0 |
 Bloonarius Prime |
1 | 2 | 19.4 | Version 27.0 |
 Chutes |
2 | 2 | 16.2 | Launch |
 Covered Garden |
1 | 1 | 19.8 | Version 33.0 |
 Cracked |
1 | 1 | 33.2 | Launch |
 Downstream |
1 | 1 | 26.4 | Version 4.0 |
 Encrypted |
1 | 2 | 28.8 | Version 21.0 |
 Firing Range |
2 | 2 | 29.8 | Version 2.0 |
 Haunted |
2 | 2 | 19.7 | Version 5.0 |
 KartsNDarts |
1 | 1 | 32.7 | Version 8.0 |
 Lost Crevasse |
2 | 2 | 19.7 | Version 50.0 |
 Luminous Cove |
2 | 2 | 27.8 | Version 44.0 |
 Moon Landing |
1 | 1 | 35.5 | Version 6.0 |
 Polyphemus |
2 | 2 | 26.9 | Version 36.0 |
 Protect The Yacht |
2 | 2 | 18.7 | Version 42.3 |
 Quarry |
2 | 1 | 34.4 | Version 32.0 |
 Quiet Street |
3 | 3 | 24.8 | Version 29.0 |
 Rake |
2 | 2 | 16.0 | Launch |
 Spice Islands |
1 | 1 | 23.8 | Launch |
 Spring Spring |
2 | 2 | 24.8 | Version 10.0 |
 Streambed |
1 | 1 | 27.1 | Launch |
 Sulfur Springs |
1 | 1 | 32.2 | Version 41.0 |
 Water Park |
2 | 2 | 21.3 | Version 38.0 |
Advanced
Advanced maps may be played after 12 unique map wins.
| Map | Entrances | Exits | Average RBS | Introduced |
|---|---|---|---|---|
 Another Brick |
1 | 1 | 19.6 | Launch |
 Cargo |
2 | 2 | 12.8 | Version 11.0 |
 Castle Revenge |
4 | 2 | 15.8 | Version 42.0 |
 Cornfield |
1 | 1 | 24.2 | Launch |
 Dark Path |
1 | 1 | 18.9 | Version 39.0 |
 Enchanted Glade |
2 | 1 | 15.5 | Version 47.0 |
 Erosion |
6 | 6 | 8.5 | Version 37.0 |
 Geared |
1 | 1 | 13.9 | Version 16.0 |
 High Finance |
2 | 2 | 21.6 | Version 3.0 |
 Last Resort |
1 | 1 | 13.8 | Version 46.0 |
 Mesa |
2 | 2 | 12.8 | Version 20.0 |
 Midnight Mansion |
2 | 2 | 18.0 | Version 33.0 |
 Mushroom Grotto |
2 | 2 | 18.7 | Version 54.0 |
 Off The Coast |
1 | 1 | 19.3 | Launch |
 Party Parade |
2 | 2 | 11.3 | Version 53.0 |
 Pat's Pond |
2 | 2 | 14.1 | Version 9.0 |
 Peninsula |
1 | 1 | 14.2 | Version 7.0 |
 Spillway |
4 | 4 | 23.0 | Version 12.0 |
 Sunken Columns |
2 | 2 | 18.8 | Version 30.0 |
 Sunset Gulch |
2 | 2 | 15.0 | Version 49.0 |
 Underground |
2 | 2 | 13.0 | Launch |
 X Factor |
4 | 4 | 18.1 | Version 22.0 |
Expert
Expert maps may be played after 20 unique map wins.
| Map | Entrances | Exits | Average RBS | Introduced |
|---|---|---|---|---|
 #Ouch |
4 | 4 | 9.1 | Launch |
 Blons |
1 | 1 | 3.5 | Version 24.0 |
 Bloody Puddles |
6 | 6 | 9.1 | Version 13.0 |
 Dark Castle |
4 | 1 | 9.6 | Version 5.0 |
 Dark Dungeons |
4 | 4 | 11.4 | Version 35.0 |
 Flooded Valley |
2 | 2 | 8.9 | Version 18.0 |
 Glacial Trail |
1 | 1 | 17.7 | Version 40.0 |
 Infernal |
2 | 2 | 19.4 | Version 15.0 |
 Muddy Puddles |
4 | 4 | 9.7 | Launch |
 Quad |
4 | 4 | 11.8 | Version 6.0 |
 Ravine |
2 | 4 | 10.6 | Version 23.0 |
 Sanctuary |
2 | 4 | 11.8 | Version 26.0 |
 Tricky Tracks |
6 | 6 | 6.3 | Version 52.0 |
 Workshop |
2 | 1 | 10.6 | Version 12.0 |