About This Game

ーー「 I 」ーー

Can you look at this character and tell whether it's an uppercase I or a lowercase l?

I used to have no idea, and spent my days deleting confusing characters like I and 0 from auto-generated passwords

just to avoid typos.

But worry no more!

I've prepared 5 lessons for you! Complete them and you'll deepen your understanding of fonts, learn to spot their

features, and be able to tell them apart!

You'll never mistype a password again!

About the lesson content

• Knowledge-based quizzes

• Reflex-based quizzes

• A running game combined with 3-choice quizzes

• A side-scrolling action game with visual traps

• A novel game with wordplay puzzles

Playtime

about 30~120 min

About Streaming & Videos

Streaming and videos are more than welcome!

Please make sure to include the game's title in your streams or videos.

It's optional, but we'd appreciate it if you could include a link to the store page!

No prior permission or contact is needed — feel free to stream or create videos!

Disclaimer

When you launch this game for the first time, the Terms of Service shown below will appear; please agree to them to start the game.

About Quiz Content

The quizzes and explanations in this game are created from information gathered on the internet.

While we have verified the information as thoroughly as possible, please note that there may be variations in readings and font origins.

We cannot be held responsible for any discrepancies from official definitions, so please refrain from citing this game as a source.

About Fonts Used in This Game

This game uses Google Fonts.

While Windows system fonts are featured as subject matter, due to licensing restrictions, those fonts are not actually used in the game — only images of them are displayed.

All font images are created uniformly in terms of position, size, and rendering method (SSAA).

Please note that positional offsets and character sizes in images are characteristics of each font, and there are limitations in resolution.

About the Characters Featured

This game features characters that are difficult to distinguish for everyone.

For example, characters like "シ(shi)" and "ツ(tsu)", which are generally considered hard to tell apart, are excluded because Japanese speakers can distinguish them.

All English letters used are half-width, and the only environment-dependent character is the Roman numeral "Ⅰ(1)" — no symbols are included.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

In this game, we used Adobe Firefly to generate and edit some of the backgrounds, live-action footage, and effects materials.