The Events tab

Rows are rules and columns are things, so you can see at a glance who does what.

Chocobreak — NutHouse
The Events tab: a toolbar at the top, then a grid with one row per rule and one column per object
The Events tab for one level. The ticks show which objects have actions in each rule.

The toolbar

+ New eventStarts a new rule. The condition picker opens and asks “New event: when what happens?”.
+ GroupA folder for events. Drag events into it to keep things tidy. See Groups and comments.
+ CommentA note to explain your events. It does nothing in the game.
Search events…Type a word to show only the rules that mention it.
All objects / Only …Shows every rule, or only the rules about one object. See Search, and Only one object.
Grid / ListThe same rules two ways. See Grid or list.

The columns, in order

The heading above the grid says “Events for {level}”. Under it, the columns always come in this order:

⚙ SpecialRules about the whole game: Always, Start of level, random chance, pausing, shaking, groups and the gates.
♪ SoundPlay a sound, play music, stop, volume.
🎬 GameNext level, restart, end the game, scrolling, saving.
⏱ TimerEvery so often, or when the level’s clock reaches a time.
✚ Create objectsMake a new copy of something, somewhere.
⌨ Keyboard & mouseKeys pressed or held, clicks, the pointer.
☺ Player 1Score, lives, Fire 1 and Fire 2, controls on and off.
☻ Player 2Only in two-player games. The second player’s score, lives and fire keys.
⤓ GravityTest or change the level’s gravity.
One per objectEvery object in the level gets a column, and so does every group of sprites.

Reading a row

The number at the left is the row’s handle: click to select, drag to move, right-click for more. Next come the condition chips. Red chips happen once; a chip starting “NOT: ” is the opposite. + and… adds another condition to the same rule.

Across the row, each cell belongs to one column. A ✓ means that thing has one action here; ✓2 means two. An empty cell says “Click to make {col} do something” when you point at it.

The last row always reads “+ New condition: click here to add a rule (“When this happens…”)”. It is the same as + New event.

Still stuck?

Try the Chocobreak tutorial, open a sample game and read its rules, or look at the questions people ask.