7       { "monster": "mon_zombie", "freq": 10, "cost_multiplier": 10, "pack_size": [ 25, 30 ] },  number
8       { "monster": "mon_zombie_fat", "freq": 75, "cost_multiplier": 1 },  number
9       { "monster": "mon_zombie_fat", "freq": 3, "cost_multiplier": 3, "pack_size": [ 3, 5 ] },  number
10       { "monster": "mon_zombie_tough", "freq": 75, "cost_multiplier": 1 },  number
11       { "monster": "mon_zombie_anklebiter", "freq": 2, "cost_multiplier": 1 },  number
12       { "monster": "mon_zombie_sproglodyte", "freq": 1, "cost_multiplier": 1 },  number
13       { "monster": "mon_zombie_shriekling", "freq": 2, "cost_multiplier": 1 },  number
14       { "monster": "mon_zombie_creepy", "freq": 1, "cost_multiplier": 1 },  number
15       { "monster": "mon_zombie_snotgobbler", "freq": 1, "cost_multiplier": 1 },  number
16       { "monster": "mon_zombie_waif", "freq": 1, "cost_multiplier": 1 },  number
17       { "monster": "mon_zombie_child", "freq": 2, "cost_multiplier": 1 },  number
18       { "monster": "mon_zombie_dog", "freq": 1, "cost_multiplier": 24, "pack_size": [ 8, 12 ] },  number
19       { "monster": "mon_dog_skeleton", "freq": 10, "cost_multiplier": 1 },  number
20       { "monster": "mon_dog_zombie_cop", "freq": 30, "cost_multiplier": 4 },  number
21       { "monster": "mon_dog_zombie_rot", "freq": 30, "cost_multiplier": 3 },  number
22       { "monster": "mon_zombie_soldier", "freq": 30, "cost_multiplier": 2 },  number
23       { "monster": "mon_zombie_cop", "freq": 40, "cost_multiplier": 2 },  number
24       { "monster": "mon_zombie_hazmat", "freq": 40, "cost_multiplier": 2 },  number
25       { "monster": "mon_zombie_fireman", "freq": 40, "cost_multiplier": 2 },  number
26       { "monster": "mon_zombie_grabber", "freq": 20, "cost_multiplier": 2 },  number
27       { "monster": "mon_zombie_grappler", "freq": 30, "cost_multiplier": 7 },  number
28       { "monster": "mon_zombie_hunter", "freq": 50, "cost_multiplier": 2 },  number
29       { "monster": "mon_zombie_smoker", "freq": 30, "cost_multiplier": 2 },  number
30       { "monster": "mon_zombie_shady", "freq": 30, "cost_multiplier": 2 },  number
31       { "monster": "mon_zombie_gasbag", "freq": 10, "cost_multiplier": 2 },  number
32       { "monster": "mon_zombie_gasbag", "freq": 10, "cost_multiplier": 5, "pack_size": [ 3, 5 ] },  number
33       { "monster": "mon_zombie_swimmer", "freq": 30, "cost_multiplier": 2 },  number
34       { "monster": "mon_zombie_shrieker", "freq": 30, "cost_multiplier": 2 },  number
35       { "monster": "mon_zombie_spitter", "freq": 10, "cost_multiplier": 2 },  number
36       { "monster": "mon_zombie_corrosive", "freq": 20, "cost_multiplier": 6 },  number
37       { "monster": "mon_zombie_electric", "freq": 10, "cost_multiplier": 2 },  number
38       { "monster": "mon_zombie_necro", "freq": 10, "cost_multiplier": 10 },  number
39       { "monster": "mon_zombie_survivor", "freq": 20, "cost_multiplier": 5 },  number
40       { "monster": "mon_boomer", "freq": 30, "cost_multiplier": 5 },  number
41       { "monster": "mon_boomer_huge", "freq": 20, "cost_multiplier": 5 },  number
42       { "monster": "mon_zombie_brute", "freq": 30, "cost_multiplier": 10 },  number
43       { "monster": "mon_zombie_brute_ninja", "freq": 1, "cost_multiplier": 20 },  number
44       { "monster": "mon_zombie_brute_grappler", "freq": 1, "cost_multiplier": 20 },  number
45       { "monster": "mon_zombie_hulk", "freq": 10, "cost_multiplier": 25 },  number
46       { "monster": "mon_skeleton_brute", "freq": 15, "cost_multiplier": 12 },  number
47       { "monster": "mon_skeleton_hulk", "freq": 10, "cost_multiplier": 25 },  number
48       { "monster": "mon_zombie_master", "freq": 10, "cost_multiplier": 15 },  number
49       { "monster": "mon_beekeeper", "freq": 5, "cost_multiplier": 1 },  number
50       { "monster": "mon_zombie_thorny", "freq": 10, "cost_multiplier": 10 },  number
51       { "monster": "mon_zombie_technician", "freq": 10, "cost_multiplier": 6 },  number
52       { "monster": "mon_zombie_brute_shocker", "freq": 10, "cost_multiplier": 20 },  number
53       { "monster": "mon_zombie_hollow", "freq": 2, "cost_multiplier": 5 },  number
54       { "monster": "mon_zombie_predator", "freq": 5, "cost_multiplier": 10 },  number
55       { "monster": "mon_zombie_ears", "freq": 10, "cost_multiplier": 2 }  number
62     "monsters": [ { "monster": "mon_zombie_spitter", "freq": 65, "cost_multiplier": 5 } ]  number