Simple version: beat better teams, go up faster. Lose to weaker teams, go down faster. Close games = small changes.
Elo is a rating that tries to answer one question: “How likely is this team to win?”. After every map:
We take the average Elo of each team in that map. This tells us which team is the favourite.
Did your team win, lose, or draw? Winning as an underdog is worth more than winning as the favourite.
We look at the score (e.g. 13–2 vs 13–11). Big stomps give slightly bigger swings than nail-biters.
New players move faster. The more maps you play, the more stable your rating becomes.
These are the Elo bands used on Terminus. Your level icon on the stats page comes from these ranges.
Here’s a simplified example of what happens when a lower-rated team beats a higher-rated team 13–2:
| Player | Old Elo | Δ this map | New Elo |
|---|---|---|---|
| Underdog entry | 980 | +42 | 1022 |
| Underdog awper | 1030 | +26 | 1056 |
| Favoured IGL | 1100 | -42 | 1058 |
| Favoured rifler | 1070 | -26 | 1044 |
Why so swingy? The system expected the higher-rated team to win. When the underdogs stomp them, Elo corrects: the underdogs shoot up and the favourites drop.