Button Simplifier by Berry_Trotter

This helps with reducing the number of buttons used in creating games. So far, it only has actions for platformers, but I will take requests. Some of the actions include:
-An action for ending or restarting the game and showing the highscore table
-An action for bouncing off of only the top of an object

Best 3D Extention Ever! by CrazySushiGames

This 3D extention is better than all the rest (cuz none of the rest work! lol!)

Awsome Action Library by Mystical73

This Extremly handy Action library contains:
Set mouse to set position - Cursor Jumps to a position of your choice.
Draw 12 hour time - Draws the current time in 12 digital time at a position of your choice.
Draw 24 hour time - Draws the current time in 24 digital time at a position of your choice.
Draw date - Draws the current date and weekday at a specified position.
Show Advanced message - Just like the normal messages except you can can the button and background of the message.
If day is equal to (sunday - saturday) - Asks if the day if equal to the specified day.
If x and y is equal to - Asks if the object is at a certain position.
If room is equal to - Asks if the room is equal to specified room.

Game Management by Matt7676

This extension comes with many things to make sure things are running cleanly and smoothly. Everything from scores to alarms to external files, it's here!

mouse move system by cyberdemon816

makes the mouse move the veiw in fps games.
NOTE:YOU must have treat unitialized variables as zero checked in the game maker's global game settings or else it won't work!

GM Colors Version 1 by Rosco22

An extension for extra colors that Game Maker doesn't have but are used often.

Lib Extension Pack by supercarson7

this is a extension pack i made for my friends to use, your free to use as long as you give credit. it includes...
Look towards mouse, objects or possitions
chose your guys name and lives
basic tds movement
sprinting
change the image speed
chose your guys colour and more...

(for the chose your guys colour for a demo of what its like look at my game The Great Asassanation, it has it on there)

Lib Extension Pack by supercarson7

This extension pack has all you need to make a good game, if used please give credit. please dont take credit, this is for my friends but anyone is free to use. it has tons of great drag and drop things and i hope you have fun.

Link Game Pack by LX Media

This Comes With Link On A First Level. Just A Starter Pack.

Please Give Me Credit Or I Will Report Game

Sound FX Extension Package by 93dt

Includes lots of Actions for Sounds! Perfect for people who dont want to be putting in sound stop codes or fade codes, ect.

Effects include...

* Fade In/Out
* Sound Stop All
* Sound Volume Change
* Sound 3D Velocity

There are alot more than these listed by the way!