How many players do I need to see whether my level tweak helped?

A small improvement needs far more players to show up than most people expect, and the players who never reach the changed level do not count at all. This entry gives a way to work out the number before you start and shows why half the effect costs four times the crowd.

Why this works

A small difference hides inside normal ups and downs, so it takes many observations before it stands out. Working out the crowd you need before you start tells you whether the test can answer anything at all, and only those who reach the change count.

When not to use it

When the number you need is far beyond your player count, stop planning a statistical test. Make a bigger change, or sit with a few players and watch them play, which shows why something works, not only whether.

In the full entry

• What to build, step by step
• Starting values and the reason for each
• 4 common mistakes and the fix
• 15 lines of example code with 4 checks that pass
• How your AI shows you that it works

Say this to your AI

Use the Spielerando entry "How many players do I need to see whether my level tweak helped?" (read_entry players-needed-to-see-whether-a-tweak-helped) in my game. Build it step by step, and show me how you checked that it works.

Or skip this and connect the MCP: your AI then finds all of this by itself.Connect the MCP