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ARAM Champion select

Guerrilla God·8/12/2015, 9:43:53 PM·3 votes·685 views

I realize the information im asking for may not be known/released by Riot, if not ust say so.

How do champions get picked in ARAM?

Consider this:

Say Lux is in the free rotation, and I also bought Lux. Does she get twice the chance of being my champion?

So like say there's 10 champions in the free rotation, and 10 that I own. 20 champions overall. Each with a 1/20 chance. Now say one of those is Lux, so she is a part of both of those groups. So 9 free rotations, 9 that I own, then Lux twice. Does this mean I have a 2/21 chance to pick her? My guess is it doesn't account for duplicates.

Another thing:

I play quite a bit of ARAM, and this happened to me last week. FYI I have around 20 champs, not just tryndamere. In 7 games over the course of 3 days, I got Tryndamere. Every single time. No rerolls. It was very weird. Notably, I won 6 games, all but the last one.

Does winning have anything to do with the next game's champion select? After the Tryndamere streak ended, I got draven 3 times in a row. I won the first two games with him and lost the last.

I am pretty sure it was just a matter of striking insane odds. And that the ARAM champ select is just straight-forward, where each champion has the same chance of being selected randomly.

3 Comments

Valderis Vandala8/13/2015, 12:14:45 AM2 votes

If only we could customize the randomness...

Maybe a checkbox to prevent free champions from being picked? Maybe let us make our own pool of champions that get randomly picked? Just add a minimum to the number of champions that need to be in the pool.

Would be nice, but Riot doesn't care.

Minarde8/13/2015, 3:12:05 AM2 votes

To my understanding, all your available champions are put into a pool, and one is randomly chosen. No mirror matches are allowed in the initial draft, but I don't remember if they're allowed via rerolls.

So like say there's 10 champions in the free rotation, and 10 that I own. 20 champions overall. Each with a 1/20 chance. Now say one of those is Lux, so she is a part of both of those groups. So 9 free rotations, 9 that I own, then Lux twice. Does this mean I have a 2/21 chance to pick her?

Should be a 1/19 chance to get Lux.

I play quite a bit of ARAM, and this happened to me last week. FYI I have around 20 champs, not just tryndamere. In 7 games over the course of 3 days, I got Tryndamere. Every single time. No rerolls. It was very weird. Notably, I won 6 games, all but the last one.

Does winning have anything to do with the next game's champion select? After the Tryndamere streak ended, I got draven 3 times in a row. I won the first two games with him and lost the last.

I am pretty sure it was just a matter of striking insane odds. And that the ARAM champ select is just straight-forward, where each champion has the same chance of being selected randomly.

Winning shouldn't have any impact. Along with the pure randomness, the "no mirror matches" exclusion affects chances. It makes things feel more biased than a less random champ select would.