What on earth is an H-Index?

One of the more unusual gaming discoveries I made in the first part of July was of another games blogger out there who was even more number-obsessed than I was.

Via a post on Board Game Geek, I found my way to an article which went into great detail about something called an H-Index. Since then I’ve found various other links which suggest that this is actually quite a common thing for game-stat-geeks to look at.

Without even realising it, I’d been making reference to something resembling an H-Index for a while, when doing my monthly updates on the 10 of 10 challenge.

If you want to read the full explanation, you can do so over on the original blog, but broadly speaking, an H-index looks at N games played N times – so if you’ve played 3 games 3 times (or more), your H-Index is 3. It’s a measuring system that works in squares, so if you had 100 games played 3 times, or 3 games played 100 times, you’d still only have an H-Index of 3, until a 4th game reached 4 plays.

As I said, I’d used what was essentially an H-Index in tracking the 10 of 10 challenge through its early stages, because there was generally more of interest to say about 6 of 6 (for example) than “still 3 games at 10, no others have got there yet” but I was a bit uncertain last year what to track after I reached 10 of 10 – did I go for 11 of 11? Or did I just keep track of 10s?

I like the H-Index model, and will use it going forward – I’m currently at 11 for 2017, as even though 13 games have been played 10 or more times, several are still sat on 10 or 11.

Looking back over the years I’ve kept records, I was able to put together lists for 2015, 2016, 2017 (so far) and “all time”(since Christmas 2014) – this was what I got.

Big4
The “Big 4” – all appearing on each individual year, and the all-time lists.

2015 –    H7

Pathfinder ACG, Lord of the Rings LCG, Dice Masters, Marvel Legendary, Game of Thrones LCG (2nd Ed), Machi Koro, Mapominoes

 

2016 –    H13

Zombicide: Black Plague, Pathfinder, Lord of the Rings LCG, Dice Masters, Marvel Legendary, Game of Thrones LCG (2nd Ed), Mansions of Madness, Arkham Horror LCG, Elder Sign, Zombie Dice, Legendary Encounters Firefly, Beyond Baker Street, Dominion

 

2017 –    H11

Lord of the Rings LCG, Arkham Horror LCG, Pathfinder ACG, Zombicide: Black Plague, Elder Sign, Dice Masters, Aeon’s End, Dominion, Marvel Legendary, Eldritch Horror, Dungeon Time

 

All-Time – H17

Pathfinder ACG, Lord of the Rings LCG, Dice Masters, Marvel Legendary, Zombicide: Black Plague, Game of Thrones LCG (2nd Ed), Arkham Horror LCG, Elder Sign, Dominion, Mansions of Madness, Mapominoes, Machi Koro, Beyond Baker Street, Zombie Dice, Aeon’s End, Star Wars Destiny, Yggdrasil

 

All-time: How we got there

The guy who wrote the blog article has also tracked the intervals between moving up a level on the H-index – this was a bit more awkward to extract the numbers for, but eventually I got to something that looked a bit like this…

Maps
The first game played after I started keeping records…

1              Mapomines        25/12/14

2              Mapominoes, Yggdrasil                 27/12/14

3              Pathfinder, Yggdrasil, Mapominoes         28/12/14

4              Pathfinder, LotR, Dice Masters, Pit           8/3/15

5              Pathfinder, LotR, Dice Masters, Mapominoes, Coup        12/5/15

6              Pathfinder, LotR, Dice Masters, Mapominoes, Dominion, Machi Koro      26/6/15

7              Pathfinder, LotR, Dice Masters, Legendary, AGoT, Machi Koro, Mapominoes      18/10/15

8              Pathfinder, LotR, Dice Masters, Legendary, AGoT, Mapominoes, Machi Koro, Curse of the Black Dice                15/3/17

9              Pathfinder, LotR, Dice Masters, Legendary, AGoT, Zombicide, Mapominoes, Machi Koro, Curse of the Black Dice                       25/3/16

10           Pathfinder, LotR, Dice Masters, Legendary, AGoT, Zombicide, Mapominoes, Machi Koro, Dobble, Curse of the Black Dice                    28/5/16

11           Pathfinder, LotR, Dice Masters, Legendary, AGoT, Zombicide, Mapominoes, Machi Koro, Dobble, Bananagrams, Dominion               15/7/16

12           Pathfinder, LotR, Dice Masters, Legendary, Zombicide, AGoT, Machi Koro, Mapominoes, Dominion, Boggle, Bananagrams, Yggdrasil 21/9/16

13           Pathinfder, LotR, Dice Masters, Legendary, Zombicide, AGoT, Machi Koro, Mapominoes, Mansions of Madness, Dominion, Yggdrasil, Boggle, Bananagrams      8/10/16

14           Pathfinder, LotR, Dice Masters, Legendary, Zombicide, AGoT, Mapominoes, Machi Koro, Mansions, Arkham LCG, Dominion, Elder Sign, Yggdrasil, Zombie Dice             2/12/16

15           Pathfinder, LotR, Dice Masters, Legendary, Zombicide, AGoT, Mapominoes, Arkham LCG, Machi Koro, Elder Sign, Mansions, Dominion, Zombie Dice, Destiny, Bananagrans  29/1/17

16           Pathfinder, LotR, Dice Masters, Legendary, Zombicide, AGoT, Elder Sign, Mapominoes, Machi Koro, Arkham LCG, Mansions, Dominion, Zombie Dice, Yggdrasil, Dobble, Bananagrams              27/2/17

17           Pathfinder, LotR, Dice Masters, Legendary, Zombicide, AGoT, Arkham LCG, Elder Sign, Mansions, Mapominoes, Machi Koro, Zombie Dice, Dominion, Yggdrasil, Beyond Baker Street, Dobble, Bananagrams                19/3/17

18

H-AllAfter the first 3, this follows a fairly steady, mostly linear progression, albeit with a few bumps here and there – it seems fairly common for there to be a long period without an increase, then going up 2 levels in fairly short order.

21 games total have appeared on the all-time H-list, with some coming in at lower levels then ducking out again, whilst others have been firmly entrenched for the duration. This is the full list, with the games in Red being ones that have previously appeared but have dipped out.

Boggle
Ready to make a comeback?

AGoT, Arkham LCG, Bananagrams, Beyond Baker Street, Boggle, Coup, Curse of the Black Dice, Dice Masters, Dobble, Dominion, Elder Sign, Legendary, LotR, Machi Koro, Mansions of Madness, Mapominoes, Pathfinder, Pit, Star Wars Destiny, Yggdrasil, Zombicide, Zombie Dice

Of these, Curse of the Black Dice and Destiny have both gone, whilst Pit and Coup are languishing on 6 and 7 plays respectively. Boggle is probably the only one that could realistically hope to re-enter the H-index in the future (although the shaking at the start is a bit noisy if the baby’s napping…)

The plays of these 17 games account for 74% of all sessions logged

Fortunately, there are plenty of other games either already just short of 18 plays, or due to land in the future that I hope will keep this ticking along – I’ll keep revisiting it as I go…

 

2017

The 2017 list is slightly harder to organise chronologically with only monthly data: reaching H-5 in January tends to lump everything together somewhat!

El Game
For a while in January, I was only playing games that began with “El” – only 1 apiece though…

The 11 games currently on the list account for 53% of the year’s gaming, so just over half,

2017

1              Elder Sign            1/1/17

2              Zombicide, Destiny         4/1/17

3              Legendary, Zombicide Elder Sign               13/1/17

4              Legendary, Destiny, Elder Sign, Zombicide            21/1/17

5              Zombicide, Eldritch Horror, Destiny, Arkham, Elder Sign 29/1/17

6              Elder Sign, Zombicide, LotR LCG, Destiny, Dice Masters, Eldritch 26/2/17

7              Elder Sign, LotR, Zombicide, Dice Masters, Destiny, Legendary, Arkham 7/3/17

8              Elder Sign, LotR, Zombicide, Arkham, Legendary, Aeon’s End, Pathfinder, Dice Masters  26/3/17

9              Elder Sign, LotR LCG, Zombicide, Arkham, Dice Masters, Aeon’s End, Pathfinder, Eldritch, Legendary,                4/4/17

10           LotR LCG, Arkham, Elder Sign, Aeon’s End, Pathfinder, Zombicide, Dice Masters, Eldritch, Legendary, Destiny                30/4/17

11           LotR LCG, Arkham, Zombicide, Elder Sign, Pathfinder, Dice Masters, Aeon’s End, Legendary, Dominion, Eldritch, Dungeon Time                 25/6/17

 

H-17This follows a much more standard distribution curve, rising sharply at the start, where a game only needs playing once or twice, then levelling off over time. Interestingly, these games only account for 52% of all sessions logged so far this year, which suggest a fair few other games hovering just outside the top.

NextAeon’s End, Arkham, Destiny, Dice Masters, Dominion, Dungeon Time, Elder Sign, Eldritch, Legendary, LotR LCG, Pathfinder, Zombicide,

Only 12 different games so far have counted towards this index of 11, with Destiny being the exception that dropped off the edge – I’ve given up on the rather punishing Destiny release schedule (coupled with a very high price-point), but I’m optimistic that Mansions of Madness and/or Runewars will make it up to 12 for the year sometime soon.

 

 

Timed

I’ve been thinking a lot recently about time: about hours of gaming rather than sessions, as a more useful measure of how much a game gets played. Using the approximate session-lengths I’ve estimated for most of my games, it seems that 10 games have clocked up 10 hours so far in 2017: Zombicide, Eldritch Horror, Arkham LCG, Aeon’s End, Elder Sign, Mansions of Madness, LotR LCG, Runewars Miniatures, Pathfinder, Legendary. – I don’t imagine it will take all that long to add another couple to this list, but much beyond 12 or 13 is likely to be difficult.

 

Going all the way back to Christmas 2014, I can get to 14 games played for 14+ hours – Pathfinder, Zombicide, LotR LCG, Dice Masters, Legendary, Mansions of Madness, Eldritch Horror, Arkham LCG, Game of Thrones LCG, Elder Sign, Machi Koro, Yggdrasil, Aeon’s End, Dominion – I can see myself getting up to 15 fairly shortly, but beyond that it’s likely to be a struggle (to pick one example sitting just outside the 14-hour mark, 2 hours of Mapominoes is quite a lot of games)

 

Hopefully some of you are still awake (you should have guessed this was coming when I published a mostly-pictures article earlier in the week), and will be back to join me next time. I’ll have the July re-cap at the beginning of August, but if you’re lucky I might manage another proper article before then too…

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