The <<revision>> macros provide a good deal of expressive power, though some potential uses may not be immediately obvious. Here are a few examples which may provide some inspiration.

An extended form of <<cyclinglink>>

This combination of <<cycle>> and <<set>> changes a variable every time you cycle the passage using the link.

<<cycle attire>>
<<set $shirt="red">>[<img[redshirt.png]] You eagerly slip on a red shirt.
<<becomes>>
<<set $shirt="blue">>[<img[blueshirt.png]] No! Clearly, a blue shirt is required.
<<becomes>>
<<set $shirt="vermillion">>[<img[yellowshirt.png]] Nope, it ''has'' to be vermillion! Or so you think...
<<endcycle>>
<<revise attire "Reconsider shirt">>

A music picker

This uses my HTML5 sound macros to create a link that changes the currently playing music when you click it. (If the music isn't meant to loop, of course substitute <<loopsound>> with <<playsound>>)

<<cycle music>>
<<stopallsound>><<loopsound "piano.ogg">>Piano music
<<becomes>>
<<stopallsound>><<loopsound "chiptune.ogg">>Chiptune music
<<becomes>>
<<stopallsound>><<loopsound "acapella.ogg">>A capella music
<<endcycle>>
<<revise music "Change current music">>

More info / Less info

This functions similar to <<replace>> but also provides a link to hide the inserted text after it's been shown.

<<revision info>>You see here a spotted stripe frog.<<revise info "(More info)">><<gains>>
Poisonous in 3 countries and illegal contraband in 7, this fearsomely shaded amphibian is an aesthetic and biological terror.
<<revert info "(Less info)">>
<<endrevision>>

Game File: 

catfactory.zip

This is an old game that predates the current GT submission system. I am reuploading it so that all my GT games will show up on this page: https://www.glorioustrainwrecks.com/games/*/sylvie

Cat Factory is a very difficult single-screen platformer. Use arrow keys to move and X to jump.

Game File: 

ihmsaimpmn.zip

Somebody asked for an obnoxiously hard nose-picking game with racecar movement in the spreadsheet. No idea if this is what they had in mind. Probably not.

Game File: 

This is an art game.zip

This is my first attempt at an art game.
It's really deep and makes you think.

Game File: 

WolfGoatAndCabbageRiverCrossingQuest.zip

Got the idea from thinking about ideas for a game and thought of the classic puzzle.

Game File: 

Descent.zip

A game about "imagining the process required to reach the pinnacle".

Game File: 

SuperThwompBros.zip

Press X to play.

Game File: 

manyinvaders.zip

a simple invaders game i'd like to play.

invader bodies are toxic! avoid them.

Game File: 

60 Seconds To Live.zip

evil frogs are going to eat you!

https://computerslime.bandcamp.com/track/8-d-6 song from here
dont ask me why all the song titles are dicks

Game File: 

frigidseamstress.zip

A word game without user input. A creatively(?) crippled version of http://nottheinternet.com/games/heftyseamstress/