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Glass Ceilings are powerful boosts in the game Sandcastle Builder.[1] There are 12 Glass Ceilings, one for each type of tool. They have multiple uses. They boost castle production in the midgame and they control the tool factory in the endgame.  There is a difficult algorithm to get the ceilings, although there is a much simpler algorithm to acquire them that is less error-prone. Getting all 12 ceilings costs a lot of glass blocks.

If you have the glass ceiling of some tool, its production is multiplied by 33Glass Ceilings owned. By buying Window Washing Beanies at the cost of (444+77*current level) scaffolds, you'll boost the multiplier. The total multiplier is then equal to (0.103125*scaffolds*2level)Glass Ceilings owned.

Glass Ceiling 0 is unlocked by the DoRD when you have Free Advice. When you own Glass Ceiling N, but none of the lower Glass Ceilings, you unlock Glass Ceiling N+1. You can lock Glass Ceilings with a button on the boost, but to lock Glass Ceiling N, you need to own Glass Ceiling N-1, but none of the lower Glass Ceilings. 

If you have the Tool Factory, locking Glass Ceilings will prevent a tool from being produced, giving a boost to the cheapest next tools. For example, if only Ceilings 0 and 1 are locked, up to 2 Cuegans, 2 Trebuchets, and 1 of all other tools except for Buckets and NewPixBots per mNP, and if only Ceiling 11 is unlocked, up to 12 Beanie Builders will be produced per mNP, assuming Production Control is locked.

CostsEdit

The first 10 Glass Ceilings are unlocked by the algorithm. Glass Ceiling N costs, without any discounts, 6000*1000N castles, 6000*1000N sand and 60*(N+1) glass blocks.

We define B(N) as the cost to build all Glass Ceilings up to Glass Ceiling N, and D(N) as the cost to destroy all Glass Ceilings up to Glass Ceiling N. We then have the following initial costs, assuming you have Family Discount:

  • B(0) = 10. Glass Ceiling 0 costs 10 glass blocks.
  • B(1) = 30. Glass Ceiling 1 costs 20 glass blocks and Glass Ceiling 0 costs 10 glass blocks.
  • D(0) = 0. You can always destroy Glass Ceiling 0.
  • D(1) = 0. If you have Glass Ceiling 0, you can destroy Glass Ceiling 1 and then Glass Ceiling 0.

Further, to get all Glass Ceilings up to Glass Ceiling N, you need to do the following:

  • Build all ceilings up to N-1. (Cost: B(N-1))
  • Destroy all ceilings up to N-2. (Cost: D(N-2))
  • Build Glass Ceiling N. (Cost: 10(N+1))
  • Build all ceilings up to N-2. (Cost: B(N-2))

To destroy all Glass Ceilings up to Glass Ceiling N, you need to do the following:

  • Destroy all ceilings up to N-2. (Cost: D(N-2))
  • Destroy Glass Ceiling N. (Cost: 0)
  • Build all ceilings up to N-2. (Cost: B(N-2))
  • Destroy all ceilings up to N-1. (Cost: D(N-1))

The following table with the cost in glass blocks can be made, assuming that Family Discount is owned. The sand and castle costs are generally not too high.

Glass Ceiling Tool Boosted B(N) B(N)-B(N-1) D(N)
0 Bucket 10 0 0
1 NewPixBot 30 20 0
2 Cuegan 70 40 10
3 Trebuchet 140 70 40
4 Flag 270 130 120
5 Scaffold 510 240 300
6 Ladder 970 460 690
7 Wave 1860 890 1500
8 Bag 3610 1750 3160
9 River 7070 3460 6520

Note that if you already have Glass Ceiling N-1 and all Glass Ceilings below, you don't need to buy them again. So to see the costs between each Glass Ceiling, you should use the fourth column. If you use ASHF and you make no mistakes, Glass Ceiling 0 to 9 can be bought all for 2828 glass blocks. Glass Ceiling 10 is unlocked at logic 80 and costs 6FQ sand, 6FQ castles and 100K glass blocks if no discounts are used. Glass Ceiling 11 is unlocked at logic 90 and costs 6WQ sand, 6WQ castles and 350K glass blocks if no discounts are used.

Tips Edit

When attempting to unlock a new ceiling a helpful tip to remember is that in order to lock a ceiling you must start with the matching even or odd ceiling. For example if you want to unlock ceiling 6 that mean you need to lock ceiling 4 and under. Since 4 is even you would start by locking ceiling 0. The sequence would be as follows:

  • lock 0 followed by 2
  • buy 0
  • lock 1, 0, and 4 in that order
  • buy 0 then 1
  • lock 0
  • buy 2 then 0
  • lock 1, 0, and 3
  • buy 0 then 1
  • lock 0 then 2
  • buy 0
  • lock 1 then 0
  • Finally you are left with only 5 allowing you to purchase 6.

You can then buy back all you ceiling and start again. To unlock the next ceiling 7 you goal would be to lock 5 and under so you would start the sequence by locking the odds, so you start with locking 1 and building from there.

If you own an even number of ceilings, then toggle ceiling 0, otherwise, toggle the nonzero ceiling. This works because there is only one ceiling other than 0 that can be toggled (except when none of the ceilings are built). If you own ceiling N but not N-1 and below, then you can toggle ceiling N+1 but ceiling N prevents all higher ceilings from being toggled. Disregard the tips above; they're too confusing.

Step Ceiling toggled Ceilings unlocked
0 1 2 3 4 5 6 7 8 9
0
1 0 Yes
2 1 Yes Yes
3 0 Yes
4 2 Yes Yes
5 0 Yes Yes Yes
6 1 Yes Yes
7 0 Yes
8 3 Yes Yes
9 0 Yes Yes Yes
10 1 Yes Yes Yes Yes
11 0 Yes Yes Yes
12 2 Yes Yes
13 0 Yes Yes Yes
14 1 Yes Yes
15 0 Yes
16 4 Yes Yes
17 0 Yes Yes Yes
18 1 Yes Yes Yes Yes
19 0 Yes Yes Yes
20 2 Yes Yes Yes Yes
21 0 Yes Yes Yes Yes Yes
22 1 Yes Yes Yes Yes
23 0 Yes Yes Yes
24 3 Yes Yes
25 0 Yes Yes Yes
26 1 Yes Yes Yes Yes
27 0 Yes Yes Yes
28 2 Yes Yes
29 0 Yes Yes Yes
30 1 Yes Yes
31 0 Yes
32 5 Yes Yes
33 0 Yes Yes Yes
34 1 Yes Yes Yes Yes
35 0 Yes Yes Yes
36 2 Yes Yes Yes Yes
37 0 Yes Yes Yes Yes Yes
38 1 Yes Yes Yes Yes
39 0 Yes Yes Yes
40 3 Yes Yes Yes Yes
41 0 Yes Yes Yes Yes Yes
42 1 Yes Yes Yes Yes Yes Yes
43 0 Yes Yes Yes Yes Yes
44 2 Yes Yes Yes Yes
45 0 Yes Yes Yes Yes Yes
46 1 Yes Yes Yes Yes
47 0 Yes Yes Yes
48 4 Yes Yes
49 0 Yes Yes Yes
50 1 Yes Yes Yes Yes
51 0 Yes Yes Yes
52 2 Yes Yes Yes Yes
53 0 Yes Yes Yes Yes Yes
54 1 Yes Yes Yes Yes
55 0 Yes Yes Yes
56 3 Yes Yes
57 0 Yes Yes Yes
58 1 Yes Yes Yes Yes
59 0 Yes Yes Yes
60 2 Yes Yes
61 0 Yes Yes Yes
62 1 Yes Yes
63 0 Yes
64 6 Yes Yes
65 0 Yes Yes Yes
66 1 Yes Yes Yes Yes
67 0 Yes Yes Yes
68 2 Yes Yes Yes Yes
69 0 Yes Yes Yes Yes Yes
70 1 Yes Yes Yes Yes
71 0 Yes Yes Yes
72 3 Yes Yes Yes Yes
73 0 Yes Yes Yes Yes Yes
74 1 Yes Yes Yes Yes Yes Yes
75 0 Yes Yes Yes Yes Yes
76 2 Yes Yes Yes Yes
77 0 Yes Yes Yes Yes Yes
78 1 Yes Yes Yes Yes
79 0 Yes Yes Yes
80 4 Yes Yes Yes Yes
81 0 Yes Yes Yes Yes Yes
82 1 Yes Yes Yes Yes Yes Yes
83 0 Yes Yes Yes Yes Yes
84 2 Yes Yes Yes Yes Yes Yes
85 0 Yes Yes Yes Yes Yes Yes Yes
86 1 Yes Yes Yes Yes Yes Yes
87 0 Yes Yes Yes Yes Yes
88 3 Yes Yes Yes Yes
89 0 Yes Yes Yes Yes Yes
90 1 Yes Yes Yes Yes Yes Yes
91 0 Yes Yes Yes Yes Yes
92 2 Yes Yes Yes Yes
93 0 Yes Yes Yes Yes Yes
94 1 Yes Yes Yes Yes
95 0 Yes Yes Yes
96 5 Yes Yes
97 0 Yes Yes Yes
98 1 Yes Yes Yes Yes
99 0 Yes Yes Yes
100 2 Yes Yes Yes Yes
101 0 Yes Yes Yes Yes Yes
102 1 Yes Yes Yes Yes
103 0 Yes Yes Yes
104 3 Yes Yes Yes Yes
105 0 Yes Yes Yes Yes Yes
106 1 Yes Yes Yes Yes Yes Yes
107 0 Yes Yes Yes Yes Yes
108 2 Yes Yes Yes Yes
109 0 Yes Yes Yes Yes Yes
110 1 Yes Yes Yes Yes
111 0 Yes Yes Yes
112 4 Yes Yes
113 0 Yes Yes Yes
114 1 Yes Yes Yes Yes
115 0 Yes Yes Yes
116 2 Yes Yes Yes Yes
117 0 Yes Yes Yes Yes Yes
118 1 Yes Yes Yes Yes
119 0 Yes Yes Yes
120 3 Yes Yes
121 0 Yes Yes Yes
122 1 Yes Yes Yes Yes
123 0 Yes Yes Yes
124 2 Yes Yes
125 0 Yes Yes Yes
126 1 Yes Yes
127 0 Yes

BadgesEdit

  • Ceiling Broken is given when the first 10 glass ceilings are owned. This means that you don't have to go through the ceiling puzzle again when molpiying down or when locking Ceilings for the Tool Factory.
  • Ceiling Disintegrated is given when all 12 glass ceilings are owned. This means that you can unlock Ceiling 10&11 with the DoRD instead of a logicat reward.

SourcesEdit

  1. Reddit
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