The Optimal Purchase Guide [Efficiency Guide Revamped]

Discussion in 'Guides' started by Koyuki, May 19, 2016.

  1. The Optimal Purchase Guide [Efficiency Guide Revamped]

    First, I'd like to give credit both to TERRA's original Building Efficiency Guide and to CraCkFaRrOkH's Efficiency guide 2.0. Both are outdated now with the release of the new lands, so I thought I'd pick up the ball and roll with it while adding some new information about efficiency. I would also like to give a massive thank you to chocolate23 for compiling the ❰ Buildings & Lands ❱ guide, which is incredibly comprehensive and provided me with all the numbers I needed to crunch.


    For those of you who don't know me, hi, I'm Koyuki. I used to play this game quite a while back before returning a few weeks ago, and since I first played I've gained 1) a healthy appreciation for maths, and 2) a working knowledge of Excel. One of the things I'm most concerned about when upgrading buildings is picking the most optimized path and getting the most stats out of my money as quickly as possible. I originally used the efficiency guides for this, but ran into a problem quite quickly: both guides fail to take upgrades into account.

    What do I mean by this? Well, let's use an example from the original efficiency guide. Just looking at the numbers for Highland buildings and upgrades shows us that buying highlands and placing a Lv1 building on them is them most efficient choice until land 12, after which upgrading all buildings to level 2 is more efficient. After buying land 13, it becomes more efficient to upgrade all buildings to level 3 before buying land 14. Here is where the problem lies. We now have our buildings all upgraded to level 3, correct? So it stands to reason that, after buying a building, we will upgrade it to level 3 to match all of the other buildings we own.

    The efficiency guides do not take this into account. They instead assume that all new buildings placed on land will be level 1, and thus distort our results and deviate from the most optimal path. All of the numbers provided by the efficiency guide after HL land 13 are thus inaccurate, and following them is suboptimal.

    So what I've endeavored to do is crunch all the numbers I could get my hands on and work out the most optimal path of buying land and upgrading. How did I do this? A spreadsheet.

    The Spreadsheet
    If you aren't interested in understanding the math behind this, feel free to skip down to the Purchase Guide.

    For ease of use (read: my sanity), I've used efficiency values from spy buildings rather than begin to dissect the differences between offensive, balanced, and defensive troop buildings. I've plugged in various sets of numbers into the spreadsheet just to verify that nothing is glaringly different between spy buildings and troop buildings, and was gratified to find that, while troop buildings have greater efficiency, the purchase guide is still accurate. Feel free to download the spreadsheet and fiddle around with it - any feedback would be much appreciated.

    While the older efficiency guides calculated efficiency for level 1 buildings and then for their subsequent upgrades, I went a little bit further. I've defined something I call an "optimal" upgrade level. This is an upgrade level that provides an exceptionally high gold spent per stats accumulated efficiency when compared to further levels.

    For example, the level 3 upgrade for Volaries has an efficiency of 2036.9, but the level 4 upgrade has an efficiency value of 506.5, nearly 4 times less. Meaning that, past land 13, the most optimal upgrade for Volaries is level 3 rather than level 1 or level 4. This same trend is evident in troop buildings too - Upgrades 1 to 3 of all Highland buildings provide much greater efficiency than Upgrade 4. There are similar trends in the Hoarfrost too. Upgrades 1 and 2 provide a much greater efficiency ratio when compared to Upgrades 3-10, for all buildings.

    For Osmon Rai and for the Abyss, however, the most significant difference is between Upgrade 1 and Upgrades 2-9. Meaning that the most optimal upgrade is level 1. After buying a new land and placing a level 1 building on it becomes less efficient than upgrading to level 2, then it becomes best to upgrade vertically - upgrading the previous building to the max possible level before buying a new land and placing a new building on it.

    Hence the "optimal" upgrades are as follows: Level 3 for Highlands (after land 13), Level 2 for Hoarfrost (after land 8), and Level 1 for both the Abyss and for Osmon Rai.

    To hammer out the most efficient purchase guide, I crunched the efficiency of buying a building and upgrading it to its optimal level versus buying a building and immediately upgrading it to the maximum level. For Highlands, after land 13, it is strictly better to leave all buildings at level 3, since upgrade level 4 is so inefficient. For Hoarfrost, Abyss, and Osmon Rai, however, there are defined changeover points - places where it becomes more efficient to begin to purchase upgrades vertically rather than to purchase land horizontally. For Hoarfrost, that changeover point is land 17; for Abyss, land 4; and for Osmon Rai, land 2... in theory. As Sethosaurus_ pointed out in the comments, fully upgrading Osmon Rai lands is impractical at the CS count implied by the changeover point. Since upgrades 5, 6, and 10 of Osmon Rai are noticeably less efficient, the changeover point splits into several - a changeover point at land 2 to from level 1 to level 4, another point at land 5 from level 4 to level 8, and another at land 10, from level 8 to level 9.

    But wait. What do all these changeover points actually mean? What they mean is that, before purchasing that specific land (land 17 HF, land 4 AB, lands 2/5/10 OR), it becomes more efficient to max out all your buildings and then continue to max out the subsequent buildings on each new land you purchase before buying another one.

    These so called optimal upgrade levels and changeover points are new data that I've introduced into the calculations, and are my major gripe with the original efficiency guides. They simply don't take enough variables into account, and I wanted to remedy that. So I did. And now, without further ado, here's the most optimal path for purchasing all lands, buildings, and their upgrades from the Highlands onwards, updated as far as Osmon Rai. Enjoy.

    The Purchase Guide
    I had to pick a color that wasn't white for Osmon Rai, so I went with yellow.

    Note: Hoarfrost land 15 is quite inefficient. However, the Abyss and Osmon Rai lands it unlocks are significantly more efficient, and thus is bumped a little higher up the priority order of the Purchase Guide.

    Highlands: Land 1 to Land 12
    Highlands: Upgrade all buildings to level 2
    Highlands: Land 13
    Highlands: Upgrade all buildings to level 3
    Highlands: Land 14 to Land 15
    Hoarfrost: Land 1 to Land 8
    Hoarfrost: Upgrade all buildings to level 2
    Hoarfrost: Land 9 to Land 10
    Highlands: Land 16
    Hoarfrost: Land 11
    Highlands: Land 17 to Land 19
    Hoarfrost: Land 12
    Highlands: Land 20
    Hoarfrost: Land 13
    Highlands: Land 21 to Land 22
    Hoarfrost: Land 14 to Land 15 ***(see note above)
    Abyss: Land 1 to Land 2
    Osmon Rai: Land 1
    Osmon Rai: Upgrade all buildings to level 4
    Abyss: Land 3
    Osmon Rai: Land 2
    Osmon Rai: Land 3
    Abyss: Upgrade all buildings to level 10
    Abyss: Land 4
    Osmon Rai: Land 4
    Osmon Rai: Upgrade all buildings to level 8
    Osmon Rai: Land 5
    Abyss: Land 5 to Land 6
    Highlands: Land 23
    Osmon Rai: Land 6
    Abyss: Land 7
    Osmon Rai: Land 7
    Abyss: Land 8
    Osmon Rai: Land 8
    Abyss: Land 9 to Land 10
    Osmon Rai: Land 9
    Osmon Rai: Upgrade all buildings to level 9
    Osmon Rai: Land 10
    Abyss: Land 11
    Osmon Rai: Land 11
    Abyss: Land 12
    Osmon Rai: Land 12
    Highlands: Land 24
    Osmon Rai: Land 13
    Abyss: Land 13
    Osmon Rai: Land 14
    Abyss: Land 14
    Osmon Rai: Land 15
    Abyss: Land 15
    Hoarfrost: Land 16
    Abyss: Land 16
    Osmon Rai: Land 16
    Highlands: Land 25
    Osmon Rai: Land 17
    Abyss: Land 17
    Osmon Rai: Land 18
    Abyss: Land 18
    Osmon Rai: Land 19 to Land 20
    Abyss: Land 19
    Osmon Rai: Land 21 to Land 25
    Abyss: Land 20 to Land 21
    Osmon Rai: Upgrade all buildings to level 10, Osmon Rai build complete
    Hoarfrost: Upgrade all buildings to level 10
    Hoarfrost: Land 17
    Abyss: Land 22
    Hoarfrost: Land 18
    Abyss: Land 23
    Hoarfrost: Land 19
    Abyss: Land 24
    Hoarfrost: Land 20
    Abyss: Land 25, Abyss build complete
    Hoarfrost: Land 21 to 22
    Highlands: Upgrade all buildings to level 4, Highlands build complete
    Hoarfrost: Land 23 to 25, Hoarfrost build complete


    20/05: Changed Osmon Rai buildings to be more practical when taking CS and total cost into consideration. Spreadsheet is not yet updated. Spreadsheet updated!
  2. Interesting, however saving up 20 some odd trillion is a bit unrealistic if you're around 30mcs by the time you reach osman rai.

    Very efficient but a bit unpractical.
  3. A possible alternative, for practicality's sake, is upgrading up to Level 4. I'll take note of that and plug it in to see how it works. Thanks for the feedback.

    [EDIT] Tested it out a little. Level 4 seems good for a stopgap measure, but level 8 seems to be the real deal. Moves the changeover point over to Land 15, which is quite far off. By then, CS should be over 100mil from Osmon Rai alone. I'll implement it.
  4. :D awesome
  5. Exactly what I was looking for, thank you. Plz sticky
  6. Ty for this guide, I've already used it to plan out my ways until BC (like that will actually ever happen) :lol: thank you though!
  7. Lol yeh OK op I'd take your word for it if you'd already done this but you are 10mil cs.
  8. It's math. You can easily make cost to cs guides if you know the stats. Just no one has decided to put the effort to post it until now.
  9. I've been build complete three times and almost a forth

    First time was at the start of the game. Did it twice, rest once. That was all lowlands.

    Than I was HLBC before they added the new levels and I got close to being HFBC. After abyss came out I ran out of energy and give a damn when it came to BCing and now with the new lands I just gave up on growing.
  10. Did you get the name Filthy Maggot when you stopped growing? :lol:
  11. Great guide.. So, basically we should push recommendations that the upgrade costs hoarDfrost buildings 50% cheaper.. Hoarfrost upgrade cost has always been the headache for lower-mid cs players.. I know it has been adjusted before but it is still ineffecient.
  12. Hoarfrost upgrades 3-10, individually, are some of the most inefficient in the game. Only thing more inefficient than them is Highlands upgrade 4. If the upgrades were 50% cheaper, then Hoarfrost would have a very solid case for being BC before finishing Abyss and possibly Osmon Rai as well. But I honestly think that only upgrades 3-10 should be made cheaper, upgrades 1-2 are very efficient as they are right now.
  13. I dont see a problem with them being inefficient myself, most people realize this and skip them anyway if they pay any attention to stat increases.

    Plus why would you want to upgrade them before you BC? Gotta get those extra hits from the Level 1's :lol:
  14. You only need one Level 1 to get the extra hits, and upgrade 2 is pretty good stat wise :D
    The problem is with the rest of the upgrades. Upgrade 3 is just sad.
  15. Upgrade 3 is sad enough to make an unborn horse fetus cry :'(
  16. Whew, glad this was made and here I was trying to HFBC first (almost made it there)
    Thanks for making this, I wont check excel but will believe in your maths :)
  17. I wanted to make this mainly for myself, but I thought it might be useful for other people as well. So I'm glad you find it useful too ;)
  18. Level 1 HF building's cs increase is even pathetic compared to a level 3 LL building which costs 30% lesser.
    HF is where your growth gets frozen until you unlocked HF 15th land.
    New players should know this if they want to grow.
  19. Obviously your growth gets frozen, it's called the Hoarfrost for a reason /s :lol:

    Seriously, though, of course Hoarfrost increases cs less. The more buildings you have, the more plunder you get, so it makes no sense to follow a standard curve in terms of gold input -> stats output unless you want the game to speed up exponentially.

    That said, HF is currently very awkward to navigate if you're unaware of how bad it is and just looking for the cheapest upgrade... which is what most players tend to do.
  20. So you saying ?

    Upgrade osmon to lvl 9/10 when ur hl, hf and abyss arent max ?

    So saving 10t when u could upgrade hf buildings to max, u upgrde 1 osmon building..

    Yeah cs will rise if u upgrade 1 osmon, but saving 10t for 1 upgrade building is too much.
    And if some 1 hits u from Bl, u will lose billions...

    So better go for hf rather than osmon...