100 Floors - Level 67

A chalkboard with a bunch of letters on it, as equations. One of them is unsolved. Do you know your Roman numerals? The Clock is ticking...

To complete this puzzle you have to be aware of two things: Roman numerals and the 24 hour clock. Translated from Roman numerals, the equations read as follows:

12 + 4 = 4
4 + 10 = 2
4 x 11 = ?

Think about a clock face and look at the first equation. If you are at 12 and you add four hours, you get 4. The second equation: if you are at 4 and you add ten hours, you swing round to 2 on the clock face. But the last equation is multiplication: 4 x 11. But 44 (or XLIV in Roman numerals) is not the answer. This is because on a clock face, every hour can be written in one of two ways. Any time after 12 noon can be written as 13, 14, 15, 16 up to 23. (12 midnight is typically written as 00.)

So without having any further hints on which to act, the answer will be one of the following:

4 AM x 11 AM = 44
4 PM (16) * 11 AM = 176
4 AM * 11 PM (23) = 92
4 PM (16) * 11 PM (23) = 368

That last one - 368 - will open the door. In Roman numerals it is CCCLXVIII.

If anyone knows why it's 368 and not one of the others, let me know in the comments!

100 Floors - Level 59

Brr! This place is frozen. There are an assortment of items lying around, and a lens of some kind mounted on the wall...can we get some heat going in here?

Pick up the stick and the rock. Use the rock to break the window at the top left. Direct the resulting rays to the pile of wood using the lens, then light the extra stick and use it to defrost the handle to open the door.

100 Floors - Level 58

Five piano keys on the floor, thirteen numbers on the wall, and "A=440Hz" on the wall above them. Music, maestro? What do the numbers mean? Hey, I see duplicates...

If you're a musician you know this already. Each musical note has a particular frequency, and in Western music the note we call "A" is set to a frequency of 440 Hz. Surrounding notes, then, will have numbers close to 440. Here we have 13 different frequencies on the wall, but if you look closer you will see that there are actually only a few listed multiple times: 261.6, 293.7 and 329.6. These are the frequencies for C, D and E, which are the white keys shown on the screen. So, read the frequencies right to left and play the corresponding notes. If you're right, you'll hear "Mary Had a Little Lamb".

100 Floors - Level 57

A big red button, a hook, a wrecking ball and a wall. This looks like fun.

When in doubt, press buttons! Hold down the button to move the hook. When it's over the ball, drag it down with your finger. Move the ball in front of the door using the button again, and tap the ball to create a lot of damage...!

100 Floors - Level 56

Minesweeper! You might need to be of a certain age to recognize this game that used to come bundled with Windows back in "the day". (Hm, I see now that it's still there, just hidden amidst many other programs.) The idea of Minesweeper was to identify bombs on a blank grid by noting the numbered squares, which told you how many bombs were surrounding each number. You then ID'd a bomb square by planting a flag. But here, the flag are already planted...

It's sort of a reverse Minesweeper. You have to look at how many flags are around each number and change the number to match the number of flags. For example, the number that starts out as "1" needs to become a 4 because there are four flags around it: left, right, below, and lower right. You'll end up with a 2, a 3, two 4s and two 5s.

100 Floors - Level 55

Looks like tetris, but reeeally colorful. We must need to fill in the gaps somehow. Go on, give it a 'whirl'...

This is a motion puzzle. Wiggle your screen around in various angles until you see motion. The missing pieces are sliding around as one great lump and you need to line them up with the existing ones to fill the grid.

100 Floors - Level 54

A lot of numbers and letters scrawled on the walls and floor, and the instructions "Enter: Code". Not "Enter Code", though...

"CODE" is what you need to enter. What is the code? It's written on the floor: A=01. Therefore C=03, O=15 and so on.

100 Floors - Level 53

Don't get zapped by the electrics...can you knock them out somehow?

Pull down the hook to pick up the cargo box, and unplug the electric cable. Now grab the wire cutters, and snip snip your way to the next level.

100 Floors - Level 52

My, this is festive. Looks like Christmas! On an American calendar anyway, not a British one.

Four numbers to fill in. When is Christmas? Dec 25th. How would you write that on a numerical calendar in the US? (and presumably a lot of other places, but NOT in the UK.) That's right: 1-2-2-5.

100 Floors - Level 51

A door full of panels that start out white but will turn black if you tap them. Clearly a certain pattern is desired. Is there anything here to use as a pattern?

Mimic the shape of the sword above the door using the panels on the wall. Click everything EXCEPT the top left, bottom left, top two rightmost, and bottom two rightmost to make a black sword shape and the door opens.

Personally, I thought making a WHITE sword shape made more sense, but that gets you nowhere.