How do I play Sum Difference online?

Click the 'Start Game' button to load Sum Difference in your browser's C64 emulator. No downloads required - the game runs directly in your web browser using JavaScript.

What are the controls for Sum Difference?

Use WASD keys for movement and Left SHIFT for the fire button on Joystick 1, or use arrow keys with Left CTRL for Joystick 2. You can swap joystick ports using the joystick swap button.

Can I save my progress in Sum Difference?

Yes! Use the save snapshot button (floppy disk icon) to save your game state, and the restore snapshot button (folder icon) to load it later. This works like a save state feature.

Who created Sum Difference?

Sum Difference was developed by Vince Apps in 1984 and published by Granada Publishing Ltd..

Online C64 Game: Sum Difference (1984) – Maths

Game Information

Sum Difference

Publisher: Granada Publishing Ltd.

Genre: Maths

Developer: Vince Apps

Year: 1984

C64 Type: PAL/NTSC

Played: 1 Times

View on Gamebase64.com

About Sum Difference

Sum Difference is a maths game for the Commodore 64 that was released in 1984. The game was developed by Vince Apps and published by Granada Publishing Ltd..

Now you can play Sum Difference online, directly in your web browser! Our Commodore 64 emulator brings this retro gaming experience to life without requiring any downloads or plugins. Just click "Start Game" and enjoy this piece of gaming history.

Joystick Controls

Joystick 1:

Left: A
Right: D
Up: W
Down: S
Fire: Left SHIFT

Joystick 2:

Left: ←
Right: →
Up: ↑
Down: ↓
Fire: Left CTRL

C64 Emulator © 2023 Thomas Hochgoetz.
We offer no C64 downloads due to copyright.

How to Play Sum Difference

Getting Started

Click the "Start Game" button to load Sum Difference directly in your browser. This Maths game from 1984 runs using our Commodore 64 emulator - no downloads, plugins, or installation required.

Game Controls

Use the keyboard controls shown in the Joystick Controls section above. By default:

Movement: WASD keys or Arrow keys
Action/Fire: Left SHIFT or Left CTRL
Switch Joysticks: Click the joystick swap icon if the controls don't respond