Happy Glass Levels 1 to 720: Tilted Glasses, Balls and Ice

Where these numbers come from

The Happy Glass build on this site keeps its Classic levels as small text files, one per level, listed in order from level_1 to level_720. Each file names every object on the board, gives its position and angle, and sets the ink budget and the number of drops the tap releases. We read all 720 of them, so the level numbers below are where each kind of object first appears. They are not guesses. A few things were also checked by playing the first levels in the frame.

The glass is not nailed down

Every level has at least one glass and one tap. The glass is a physics object too. On level 2 it hangs above a gap between two ledges, and as soon as the water starts it falls. If nothing catches it, it lands on its side and spills. Starting at level 94, some levels place the glass at an angle. In total 148 of the 720 levels start with a tilted glass, so your line often has to stand the glass up or prop it before the water arrives.

Two glasses, more taps

Level 1 already has two glasses, side by side behind two walls. 37 levels in all ask you to fill two glasses with one budget of ink. Most levels have a single tap, but 47 have two, one has three and one has four. With more than one tap, check where each stream will land before you draw. Each tap releases a fixed number of drops, most often 50 or 60, so you cannot let a bad stream run until it somehow fills the glass.

What gets added, in order

First level	Object (name in the level file)	Levels using it
1	Fixed boards (BoardStatic)	651
5 to 7	Fixed triangles and balls (TriangleStatic, BallStatic)	up to 42 each
6	Key	13
21 and 23	Loose balls (Ball1, Ball2)	40 and 109
41	Loose plank (Board)	143
51	Pinwheel	24
62	Pinned shapes (PinShape)	about 30 for the most common
71	Hot boards, balls and triangles (HotBoardStatic and others)	59 for the board
91	DisabledZone	144
241	Pinned board (PinBoard)	42
351	Conveyor (ConveyorStatic)	86
541	Freeze board (FreezeBoardStatic)	37
about 630	Stars, hexagons, octagons, capsules and ellipses	a handful each

In the file names, "Static" marks a piece that stays fixed. The same shapes without "Static" are loose and fall or roll when something hits them. Pin pieces are held at one point, so they can turn. The game code has a contact handler for hot items and links the freeze board to an ice container, which tells you those two react when water touches them. The last stretch of levels, from about 630 on, mostly brings in new shapes, not new rules.

What this means when you play

• From level 21, check for loose balls before you draw. A ball that rolls into your ramp can knock it out of place.
• From level 41, a loose plank is often half of the answer. A short stroke that tips or wedges it costs less ink than building a new ramp.
• From level 94, look at the angle of the glass first. If it starts tilted, the first job of your line is to set it upright.
• On two-glass levels, one flat stroke that splits the stream, as on level 1, often fills both glasses.