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EnglishHow TrueAchievements Scores Differ from Xbox Gamerscore
Updated
Xbox Gamerscore gives every achievement the same face value: a 10G achievement is worth 10 points whether 90% of players unlocked it or 0.5% did. TrueAchievements (TA) recalculates that value using how many tracked players have actually earned each achievement, so rare achievements are worth far more than their listed Gamerscore and common ones are worth less. The result is a difficulty-weighted score meant to compare players more fairly than raw Gamerscore can.
The core difference: fixed value vs. earned value
Microsoft assigns each achievement a Gamerscore value when the game is built, and that number never changes. It reflects the developer's guess at importance, not how hard the achievement turned out to be in practice.
TA's TrueAchievement score (often written as TA score) starts from that same Gamerscore but adjusts it by the achievement's rarity across the site's tracked player base. The rarer the unlock, the larger the multiplier applied.
| Xbox Gamerscore | TrueAchievement score | |
|---|---|---|
| Who sets the value | Game developer | Calculated from player data |
| Basis | Fixed number per achievement | Gamerscore adjusted by rarity |
| Changes over time | No | Yes, as unlock rates shift |
| A 10G achievement can be worth | Always 10G | Well above or below 10 |
| Main use | Universal Xbox profile stat | Site leaderboards and comparisons |
Why difficulty changes the number
The mechanism is a ratio. TA looks at how many of its tracked players have the game and how many have unlocked a given achievement, then scales the Gamerscore up or down accordingly.
A concrete example: two achievements both listed at 20G. One is a story milestone that nearly everyone hits, so its TA value might land near or below 20. The other is a brutal no-death run that only a small fraction of players complete, so its TA value could be several times 20. On Xbox both read as 20G; on TA they are not close.
This is why a game's total TA score rarely matches its total Gamerscore, and why two players with identical Gamerscore can sit far apart on TA leaderboards.
What this means for leaderboards and comparison
Because the score tracks rarity, TA leaderboards reward players who finish hard content rather than players who simply play a lot of easy games. A completionist who grinds obscure, difficult titles can outrank someone with a much larger raw Gamerscore.
Practical consequences:
- Comparing profiles: Gamerscore favors volume; TA score favors difficulty. Neither is "correct" — they answer different questions.
- Completion tracking: TA's rarity data also feeds completion percentage, which Gamerscore alone can't express.
- Moving targets: Because unlock rates change as more players earn an achievement, a TA score is a snapshot, not a fixed lifetime total.
Where the two scores live
Gamerscore is native to your Xbox profile and appears everywhere Xbox does. TA score exists only on TrueAchievements, calculated from the site's own tracked data — so it depends on that player base, not on Microsoft's numbers. If you want a difficulty-aware view of achievements, news, guides, and leaderboards, that is the site's purpose; if you just want the number Microsoft shows on your console, that is Gamerscore.