Bitsy is a little editor for little games or worlds developed by Adam Le Deux.
Bitsy games typically involve some kind of avatar moving through different rooms.
Each room is made by repeatable tiles and can contain interactive objects and exits to other rooms.
“Pushing against” interactive objects can make them disappear (collectables) or display text (dialogues, monologues, descriptions, narration).

Bitsy editor

Bitsy games are saved in the browser memory so download them often as a backup and if you need to work from different computers.


Before you start making your bitsy game, let’s all play these pieces:

Junk Shop Telescope (playing with scale)

Spiral house (playing with abstraction by alumn Everest Pipkin)

A gallery visit (not only top down)

Novena (playing with repetition)

Continental Drift (autobiographical)

Moss as texture as space folding onto itself (playing with patterns and abstraction)

Roomba Quest (puzzle)

Our Damned Machine (environmental piece)

The last human touch (time travel)

Cinerarium of solaris (magical realism)

A prison strike (by me)

A holiday yarn (visual hack)

Castle of the water monk (made with bitsy in 3D)


Assignment: play a few titles and recommend two games to the class by posting a link on discord. Write one paragraph explaining why they are worth playing and highlight some idea, solution or trick you can potentially apply to your story.


Intro to bitsy  (text)

Intro Tutorial (slide presentation)

Bitsy video series

Bitsy dialogue system

Bitsy variables

Bitsy hacks

Borksy   a collection of bitsy hacks including 3d, advanced sound, dialogue functions etc

Image to bitsy – convert external images to bitsy data (there are a few other similar tools)
If you want to use this remember to name your tiles, don’t use default names

Add audio to bitsy – add an mp3 soundtrack to the whole experience (after the game is finished)


Bitsy is a simple whimsy tool, that doesn’t mean your game have to be simple and whimsy.
You can have humor and wholesome themes but ultimately your goal is make something that looks like it’s made by an adult artist, so take it seriously and avoid childish stories like “a puppy has to collect 5 cupcakes”.
All anthropomorphic animal characters are forbidden. If you have animals they have to behave like animals.

Narrative prompt:
Everything in one room
Adapt any fiction 100 years + old
Hostile architecture
Before and after
Four Seasons
An upsetting dream
My first time
Reverse time

Theme modifiers, pick one:

-Non linear space (the rooms are not describing a continuous space)
-Non linear time (the game has flashforwards or flashbacks)
-Loop, the game ends where it began
-Multiple endings
-Multiple beginnings
-Multiple avatars (using the avatar by room hack)
Non fiction
-No movement in space
-Abstract avatar (what if it’s not about a person walking around)
-Non human/non anthropomorphized avatar

What are places, locations, situations that immediately come to your mind?
What are some less obvious one?
Who is the player and what are they doing there?
Who else lives or exists in that place?
What happened in that place an hour ago? A year ago? What is going to happen tomorrow?
How can you tell the story of the place through objects and characters disseminated in this space?
How do you intrigue the player and keep their attention? What questions are you asking narratively?
How can you surprise the player? What is a twist, a discovery, a revelation you can deliver towards the end?
Is there a common choice based pattern that may work for you?


Part 1
1. Bring two ideas for a short bitsy game elaborating on the assigned theme.
2. Plan all the rooms on paper, including sprites, npcs dialogues.
3. Make a single room in bitsy representative of the style, the dialogue and the vibe of the game.
This is mostly for you to get acquainted with the tool and understand how long it takes to make things for it, don’t get too attached to it.

Part 2
Complete the game and post it in itchio with a proper page with screenshots, description etc.

Playable in 5 minutes or less – quality not quantity
Some degree of non-linearity – don’t make me advance through a series of scenes
Make something a child would never think of making
No default music or graphics
Playable full screen on itchio – it’s just a setting

Learning objectives

Bitsy is not a professional game making tool and it’s very limited, so what’s the point of the assignment? Ideally you will:

  • Tell a story non linearly, through narrative bits disseminated in a coherent environment (think of it as a world-building assignment)
  • Convey a theme, express something personal, create a mood without resorting to cliches (ie don’t put a fetch quest just because that what happens in games)
  • Learn to use and reuse graphic assets economically (tiles and modular assets are common in game design)
  • Learn to communicate the affordances of a space, such as: where are the exits, what are the walls, what are you supposed to do, where are you supposed to go (this huge part of game design, level design, and art direction in interactive media)
  • Learn to overcome the limitation of a tool by using hacks, unconventional solutions, or out-of-the-box thinking.

Tips and notes

It’s ok to leave areas untiled, you can use negative spaces and the background color to communicate what areas are walkable

especially for natural environment make slight variations of the same tiles to make it look less grid-like

If your avatar and sprites walk on tiles of both colors make them transparent by adding
Right under the corresponding game data. Doing so requires a sprite color that stands out against the other two.

Do not under any circumstances use the default bitsy music. Turn it off.
The default music just tells the players that you don’t know what you are doing and that they should not play your thing.

Avoid square tiles and straight edges especially when doing non architectural rooms

Making tilesets is pretty much about rounding corners and creating patterns that break the grid:

modular tiles are powerful but consider patterns that cover multiple tiles to add some variation. Like this:

versus  this

You only have two colors but you can use techniques like dithering (manual in this case) to add depth and gradients

Try to convey exits and walkable areas without using arrows and explicit signage.
You can have multiple exits taking you to the same room for more open ended levels

The classic exit-reentry problem: a door is approached by moving left, the avatar spawns in the second room to the right of the entrance, the player keeps pressing left and goes back to the first room. Annoying and confusing, either maintain cinematic and spatial continuity or spawn the player away from an exit that could cause that problem.


Bitsys don’t have to be top down or side view, but consider that other layouts make the 4 direction movement and the wall collision more awkward.

You can’t have a proper gameplay in bitsy so you may be tempted to create some challenge by making the player’s progression less intuitive eg with hidden passages and non obvious interactions. Obfuscation is not puzzle design: good puzzles are always readable, you know what you can do and what you have to do, the challenge is figuring out how.


Unless it makes sense conceptually you don’t want the player to wander around trapped in your game forever.
Give your game a proper ending: