HEXFALL

An arcade game for learning binary and hexadecimal. Asteroids are falling toward three cannons, and the only way to reload is to convert binary to hex, fast.

Practice rounds at three speeds, with an optional 8-4-2-1 place-value helper.
Five extra-credit missions for students. The server checks every digit, and each pass earns a certificate.
A teacher dashboard for student logins, results and certificate checks.

Teachers and curious visitors: want to use Hexfall in your class, or have a question about it? Email Mr. Garot at garotg@gmail.com.

Made by Gary Garot · garotworks.com

HEXFALL

Sign in with the codename and PIN from your login slip. Your extra credit is saved to your codename.

Questions about Hexfall? Email Mr. Garot at garotg@gmail.com.

Signed in as

HEXFALL

Asteroids are falling, several at a time. Click or tap a rock to blast it with your three cannons, or press Space to hit the most dangerous one.

How to play

BIG → MED → SMALLEach hit breaks a rock into smaller pieces. Small pieces turn to dust. LOADEach cannon loads on its own. Type the hex digit for its 4-bit binary to give it shots. 1 · 2 · 3Click a rock to fire every loaded cannon. One cannon chips it, two hit harder, all three make a full blast. 1010 → A8 + 2 = 10 = A. Stuck? Open the Hex table below the cannons. ✗A wrong digit jams that cannon for a second. BONUS CODEWhen the bonus box drops in, type its 2 hex digits before time runs out to blow up every rock. 5 IN A ROWEvery 5 correct digits in a row without a miss repairs +10 shield. 5 clean loadsOverdrive: double points until you miss a digit or get hit. BOSS · PLANEA boss arrives every level. Bonus planes are worth big points.

Practice

Extra credit · 0 of 5 points

MISSION PASSED

Your name on the certificate (only printed on the picture, not saved online)

Turn in the downloaded picture the way Mr. Garot asks (for example, in Google Classroom). Your teacher checks the code on it.

PAUSED

The reload code is hidden while paused. Press P or Esc to keep playing.

SHIELD DOWN

The ground took too many hits.

Score0

Rocks destroyed0

Cannon loads0

Digit accuracy0%