Return

Personal best

Effort: Low

What to notice

The result appears next to the previous score and the improvement.

How to build it

  1. Store each user’s previous and best results.
  2. Show the change from last time on the result screen.
  3. Show leaderboards only to people who opt in.

Measure

Main metric
Retry rate
Guardrail
Churn after a worse score

When it backfires

Blaming language after a worse score drives people away.

Theory behind it

Playable demos

Try the same mechanism in a playable demo.