Introduction:Features

Extensive and fully searchable documentation
Portability: Run your game on any web page.
Game file bundler: Save your game as a single HTML file for upload to itch.io or other website.
Real time debugging Debug as you play-test
Dual debug streams: In-game debugging for player and in-console debugging for developer, with over 1,000 distinct log messages
No compiling: Your game code is the game file.
Over 170 verbs, each with distinct logic
Handles "go to" with built-in pathfinding using Dijkstra's algorithm
Handles take all and its variations:take all but A and B, take all A from B, take all A but B from C, etc.
Easily enable and disable built-in verbs
Modify existing verbs or write new ones
Over 1,000 distinct responses to various player input
Customize any built-in responses
Customize visual styles via inline CSS or use your own style sheet
Use images in text
options for text+graphic hybrid UI
Verb hooks offer numerous ways to inject custom code
Supports ad hoc Javascript functions
Parser handles up to three nouns
Built-in goal system
Built-in hint system
Built-in scoring system
Add custom pronoun sets
Set distinct person for parser and player: 1st person parser: I don't know the word foo.
2nd person player: You can't take the bar.
Handles titles with periods, like Mrs., Dr., Ph.D., etc.
Parser handles objective pronouns like him, her, it, them
Parser handles possessive pronouns like his, her, its, their
Parser handles possessive nouns with apostrophes, such as take the Adventurer's lamp
Parser recognizes common body parts that haven't explicitly been defined as distinct objects, such as tickle the Grue's toes
Built-in support for substances like water and sand, and substance containers
Built-in support for fungible stacks, i.e. taking one from a bunch
Dynamic asset creation: Use game.addClass() to create new assets at runtime.
Use the optional x|y|z coordinate system to determine reachability of objects in the same room