Undertale Font: Which Fonts the Game Uses + Free Pixel Alternatives
What font does Undertale use? The dialogue font, the two skeleton brothers (Comic Sans and Papyrus), fan recreations of the logo, and free pixel fonts for your own RPG dialogue boxes with samples.
Undertale uses several fonts, not one. The dialogue box uses a small pixel font, the two skeleton brothers speak in two famous system fonts, and the logo is custom lettering. Below: which font is which, what you can legally use, and two original pixel fonts we made for RPG dialogue boxes in the same spirit.
Quick Answer: Which Undertale Font Is Which?
| Where in the game | Font | Can you use it? |
|---|---|---|
| Dialogue and menus | A pixel font commonly identified as 8bitoperator JVE; fans also use the recreation "Determination Mono" | Fan and free fonts: check the license on the download page |
| Sans's speech | Comic Sans MS | Ships with Windows; commercial use needs a Microsoft license |
| Papyrus's speech | Papyrus | Commercial font, licensed by its owner |
| Logo | Custom lettering; fan recreations exist (often named "Monster Friend") | Personal use only, never on a product |
| Your own game, similar mood | Questbit, Bitrune (RuneType) | Free for personal use, $9 Commercial |
The Dialogue Font
The text box font is a clean 8-pixel style with wide letters, which is why it stays readable on a small screen. Fans usually point to 8bitoperator JVE as the source, and the popular download Determination Mono is a fan recreation made to match the in-game text. If you use either one, read the license on the page you download it from and treat fan recreations as personal use only.
Tip for fan games: set pixel fonts at their native size or exact multiples (8, 16, 24 px). In-between sizes blur the pixels.
Sans and Papyrus
The two skeleton brothers are a running joke: Sans talks in Comic Sans and Papyrus talks in Papyrus. Both are commercial fonts. Comic Sans ships with Windows, so you can use it on your own computer, but a game or merch you sell needs the right license for both. Do not redistribute their files with your game.
The Logo
The Undertale logo is custom lettering, not a font you can buy. Fan fonts that imitate it circulate under names like "Monster Friend". They are fine for a fan poster, but the logo and the name belong to the game's creator, so never use them on a product.
Free Pixel Fonts for Your Own RPG (Original Designs)
If you are making your own RPG or fan game and want the same cozy pixel dialogue feel without copying it, these two fonts from our RuneType collection are drawn on a real pixel grid.
Questbit: pixel RPG dialogue
Upper and lowercase pixel letters made for dialogue boxes, quest logs and item descriptions.
Bitrune: pixel arcade titles
Chunky capitals for title screens, menus, scores and "PRESS START".
Both are free for personal use: fan games, game jams, mods and school projects. For a commercial game, merch or client work, pick the Commercial version on the font's page ($9, the same files plus a WOFF2 web font).
For five more pixel fonts with a commercial license (Press Start 2P, Silkscreen, VT323 and others), see our free pixel fonts guide.
FAQ
What font does Undertale use?
The dialogue uses a small pixel font commonly identified as 8bitoperator JVE (fans use the recreation Determination Mono). Sans speaks in Comic Sans, Papyrus in Papyrus, and the logo is custom lettering.
Can I use the Undertale font in my game?
Fan recreations are meant for personal use. For a game you sell, use a font whose license allows it: Questbit or Bitrune with the $9 Commercial version, or an Open Font License pixel font such as Press Start 2P.
What size should a pixel dialogue font be?
Use the font's native pixel size or an exact multiple of it (for example 8, 16 or 24 px) and turn off anti-aliasing in your engine.
More Game Fonts
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