Symptom, cause and fix
| What the player says | Likely cause | Fix |
|---|---|---|
| 'The character feels heavy' | Slow acceleration or weak gravity | Raise the speed and shorten the jump time |
| 'I died for no reason' | A hitbox bigger than the drawing | Shrink the hazard's hitbox a little |
| 'I felt nothing' | No sound or motion on actions | Add a sound and a flash to every hit and pickup |
| 'Too easy' or 'impossible' | A flat or sudden difficulty curve | Add one hazard per level |
Four pillars of fun
- Instant control: the character responds the very moment you press.
- Clear feedback: every action has a sound and a motion that confirm it.
- Fair challenge: the player loses through their own mistake, not the game's.
- Felt progress: points, levels or a new ability every so often.
How to tune
- 1Change one number
Do not change jump, speed and gravity together, or you will not know which one made the difference.
- 2Play for ten seconds
The verdict comes from your hands, not the numbers. If you feel no difference, double the change.
- 3Watch a new player
You are used to your own game. Someone seeing it for the first time exposes the problem in a minute.