Building something?

Statement helps you wrangle your states into submission!

Easy to setup and use, but with a V8 engine sitting under the hood giving you features such as transitions, state templates, child state machines, state change locks and guards and more, Statement is perfect for the discerning state machine enthusiast.

(Plus, it has an in-game visual debugger to help you visually tackle any gnarly state bugs!)

Pulse is the pub/sub pattern taken to the extreme! Communicate between game systems without having to litter hard references through your code.

obj_player needs to talk to obj_archer? Use Pulse and then, if you later decide you don't want archers, you can simply delete obj_archer without having to worry about rounding up all the references!

(Plus many, many more features)

Whisper takes storylets and jams them into GM!

Storylets are little chunks of story that you write for specific moments. Maybe you want your boss to say "Health potions didn't save you last time!" if the player drinks a health potion mid-fight after already having done so the last time they faced off.

Sounds painfully complicated right? Well, that's where Whisper steps in to save the day.

Make your dialog react to the actual game, not a passive story happening in the background.

GM has extremely barebones text input. Quill's entire goal is to fix that.

That means you get a caret! You get right-click context menus! You get all the copy + paste behaviour! You get flexible skinning! And you get a lot more!

Quill hands you everything a player expects to exist in a normal textbox, and you go from no textboxes to textboxes in your game with just two lines of code!

Creating a dynamic, reactive stats system is a pain in the ass. Soothe that pain with Catalyst!

Want your maximum hp to automatically update based on vitality + fortitude * 1.3? One method call!

Want stamina to drain while you're running, then wait 5 seconds after you stop before it starts recovering? Two method calls!

Catalyst makes this kind of stuff (and way, way more) as easy as pie.

Want enemies to appear in different combinations depending on the difficulty level or area? Need balanced loot drops? What about picking what items should appear in a shop?

Fate heroically enters the scene.

Comes with all the standard gacha rules as well (and a lot of simulation + regression testing stuff so you can make sure you're not lying to your players about odds)

Need a chest that drops a sword 25% of the time, leather material 75% of the time and guarantees a gold drop every time (with a 0.1% chance to choose an epic drop from another loot table)?

Fate has you covered.

Comes with all the standard gacha rules as well (and a lot of simulation + regression testing stuff so you can make sure you're not lying to your players about odds)

A chest piece that adds 5 to defense and reduces the chance of burning by 25%? That's a-Catalyst.

A potion that removes all debuffs marked "poison"? That's a-Catalyst.

About a bazillion other different ways you can influence numbers in your game? You got it, that's a-Catalyst.

Easy creation of complex reactive stuff is the name of the game here.

Pulse is the pub/sub pattern taken to the extreme! Broadcast a message and have multiple other systems react to that message without coupling them together.

No more crashes because you decided to rearrange something in your project!

(Plus many, many more features)

Statement gives you a bunch of clean ways to separate the actions your state needs from the code your state is running. Transitions sit apart from templates, which sit apart from exit locks and guards, which sit apart from your actual state code. Never get yourself lost in hall of mirrors made from states again!

(Plus, it has an in-game visual debugger to help you visually tackle any gnarly state bugs!)

Want the same level to look warm in the afternoon, purple at dusk and cool blue at night? Sundial lets you visually set that up in GameMaker, without running your game!

Build out how the mood of your day/night cycle changes directly in GameMaker. You can scrub through the timeline, adjust the mood of dawn, or midday and see the changes reflected instantly!

Then get those changes running in your game with two simple lines of code. The perfect tool for designers who hate coding!