How Project Zomboid made.. 23x its normal sales numbers?!

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[The GameDiscoverCo game discovery newsletter is written by ‘how people find your game’ expert & GameDiscoverCo founder Simon Carless, and is a regular look at how people discover and buy video games in the 2020s.]

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Project Zomboid: multiplayer changed the game!

Some of you may be aware that suddenly, we’re seeing a game called Project Zomboid in the Steam Top 10-grossing games of the week. In fact, it’s all the way up at #4 in last week’s Steam charts, sandwiched between Monster Hunter Rise & the new Five Nights At Freddy’s game (!)

You might also vaguely remember that Project Zomboid - an isometric zombie survival game, btw - has been around on Steam for a long time. We believe that it’s the longest-running Steam game still in Early Access, according to this list. It’s been on Steam since 2013, and its first version was released all the way back in 2011 (!)

To be clear, PZ has always been popular. It’s had 40,000 Steam reviews LTD through the end of November. And in looking around, I was impressed with both the depth of its ‘painstakingly survive the zombie apocalypse at all costs’ gameplay, and the strength of its modding scene & its community-centric GaaS dev approach.

Starting in 2020, the game started surging to new heights, in part thanks to streamer support. This blog post from November 2020 reveals a new high peak CCU of over 5,000 at that time. (We recommend watching the ‘can I survive as an underweight, weak basket case?’ YouTube video that helped spawn that high, btw.) But look at the game’s Steam CCU in recent weeks:

Yes, that’s a 64k CCU high, wow! And it’s with the multiplayer patch for the game - officially released on December 20th but available in Beta earlier in December - that the game has gone through the roof with players. And with streamers, actually, if you look at Sullygnome’s Twitch stats for the game.

So yes, adding 32-person multiplayer and Minecraft-style dedicated servers on top of a game that had already been a decade+ in development is a great way to have a smash hit on Steam. Easy, huh? And luckily, we had a chance to chat to Project Zomboid co-creator, The Indie Stone’s Chris Simpson about how this all went down:

Were you surprised about the virality increase in taking Project Zomboid multiplayer? Do you think this interest spike is being fueled by Twitch, YouTube, TikTok, existing users recommending, or all of the above?

I think it’s likely a combination of all the things you mention, all contributing to fuelling us to stay in the top ten and be in line of sight of more potential customers.

We definitely knew there was a lot of potential there, from our feedback from our community during the single player beta, and seeing where players were looking for roleplaying opportunities in games that cater to it. We knew that, if we stuck the landing of the MP release, that things could go gangbusters. However, the sheer magnitude of it is something we could never have expected.

We also clearly had a huge existing customer base of over 2 million players that we’ve been slowly accumulating over the past decade. So bringing a lot of those players back all at once, along with the viral effect of them wanting to play multiplayer with their friends, is probably another prime factor in how it grew so rapidly on its release.

I know you'd rolled out some versions of multiplayer back in 2014 or so. Why did you decide to not pursue that further, and what made you decide to try to put multiplayer back in as a core part of the game again?

In short, our old multiplayer tech was extremely janky. We suffered from extreme memory usage on servers, servers frequently fell over or were overworked resulting in severe map streaming issues, we had terrible rubber banding and character movement - the list goes on…

It was functional enough that our dedicated fanbase got enjoyment out of it. But we'd never have stood a chance if we kept it like that that for the new build. We made such an effort to improve the character animation systems to make for a more immersive experience in Build 41 that having their movement become so rough on multiplayer would have been a terrible shame.

We felt a complete rewrite of the multiplayer architecture was the only sensible option. We took our ideas in terms of how to structuring a new MP framework to fit our game and prioritize what’s important in the PZ experience to our friends at General Arcade – an awesome third party development and porting house that we have now been working with for many years. They had the skills and experience necessary to write extremely solid multiplayer. And with our powers combined, we created something pretty special.

What's the biggest negative of 'going big' with a multiplayer game like you currently are? Server limit issues, hacking/cheating, dev crunch issues to fix bugs, or all of the above?

Ask us in a few months, I guess! It's hard to see any negatives at the moment. We've been very upfront that at the moment our server security requires improvement, and that people running servers would be strongly advised to run whitelisted servers with their communities or friends.

We'll be looking into anti-cheat solutions in the near future. And it'll be interesting how that'll work, not least because we're a highly moddable and open Java-based game - it may be an interesting challenge trying to combat hackers.

At the moment we're being somewhat conservative with our player counts, fixing it at 32 players. This seems to be a good number to allow players to feel their servers are sufficiently populated, without stressing the servers too much.

We have plans to expand this significantly. But I think the main thing is that we managed expectations by underlining that playing co-op with your friends was our top priority - and everything else was to be seen as a bonus.

Can you talk about your country breakdown for the game - what's your lifetime sales per country by percentage, and has that changed with the multiplayer version rollout?

A: In its entire history, 26% of our customers have been in the U.S, along with 12% in both China and Russia, followed by the UK and Canada. This has actually been pretty consistent compared to the last month, with the U.S., China and Russia still leading the way. The only difference is that Brazil managed to creep above the UK and Canada.

Also, on units sold - I'm presuming a lot of people returned to the game because of multiplayer, but can you talk about new buyers? In an average week, are you getting significant multiples of new purchasers, year on year?

It's a little hard to quantify, as we had the Holiday Sale situated in the middle of our recent spike. We're seeing about 13x the sales we saw in the previous month before the MP release, which obviously is heavily skewed because of the sale.

We sold 6x more units last Saturday compared to a Saturday at the start of December. But even that's probably underselling the uptick due to the fact that there was some increased attention due to the approach of our multiplayer release.

We did however in the past month sell 23x the units that we did in the same period over last year's Holiday Sale!

For many, many years we’ve had what we’ve called ‘the drip’ – which are the baseline sales that have never really wavered day-to-day (too much) over the whole of our ten years of development. It’s too early to tell what the ‘new normal’ for this will be once all the excitement and Steam sale rush has died down a bit. But it will be interesting to see for sure.  

Finally - it seems like you've kept working on this game for a lot longer than others would have - in part because of the enthusiastic community. Is this multiplayer spike a good-feeling payoff for you, or does it feel like another set of problems to tackle?

Oh, entirely the first thing. It's reinvigorated the entire team. It's no exaggeration to say that working on the same game for a decade starts to wear you down after a while: the desire to experience that 'new project' excitement. Everyone knows that the start of a project is more fun than finishing one.

However, we have a lot of love for the game. And more than anything, we want to create something special as our 'magnum opus' of sorts - we're unlikely to ever work on anything this expansive ever again. Finally seeing it break out and seeing all the wonderfully kind and complimentary comments on social media from people just discovering the game is great.

In particular, with the added social element of the multiplayer, it has been incredible and a joy to search (every 10 seconds for weeks) what people are saying about it - and watch the incredibly creative videos that people are putting out.

Most importantly too, it’s been so lovely seeing the joy that our own community seems to take from the game’s success. It feels like our community has become incredibly invested in seeing the game take off. That's been really touching to see.

Reddit’s top (non-Reddit!) place to find games?

With the full knowledge that any question asked on the Internet will be answered in a filter bubble, we nonetheless thought this recent Reddit r/games post on how people find out about games is notable:

“Like the title says, I want to know where else people are going to find information about games other than Reddit. While I do really appreciate the r/games sub, it can be a bit frustrating at times the amount of gatekeeping that goes on with people downvoting or attempting to bury games they personally didn't like.”

It’s game discovery in its purest form, folks! Our impression is that r/games skews ‘mainstream, slightly more knowledgable than normal PC/console Western gamer with an interest in indies’, for what it’s worth. And here’s the notable trends in everyone’s replies:

• Streamers definitely get top billing here: “YouTube seems to be the best bet for me… end of the year videos from my subbed channels tend to give great recs.” Feel free to scroll through the entire thread for recommendations, from SplatterCat and Nookrium to Skill Up & beyond. But lots of love in general for the diversity of views and niches you can get there.

• Good news for platform discovery? There’s evidence Steam’s discovery tools are working: “I play an absolute ton of local coop games on PC, some of them extremely obscure (i.e. "less-than-10-reviews-on-Steam" tier). Some of these don't get discussed / get traction basically anywhere, but on Steam between the auto-selection based on my play history and the filtering by tags/genres/player number it's pretty easy to keep track of the releases.” Also: “Steam's NextFests with demos have been great to me.”

• There’s some grumpiness at traditional editorial sites for pivoting to ‘how to’ guides - which of course, are how text-based sites can actually get search engine traffic nowadays: “Every headline on [PC Gamer’s] home page is something like "X reasons why you should care about this uninteresting topic" or "The best / how to Y in Fortnite/Warzone".” The point is overstated, but there’s a trend there.

There’s a few other types of media that get a shout-out. For example The Besties podcast gets mentioned a few times. And there’s even a plug for Twitter (“the devs of the future are just on there talking to fans and gamers about every little detail”), despite our view that it’s not a great use of discovery time for most devs. So there you go!

The game discovery news round-up..

And it’s time to finish up the week with dessert - a delicious sundae full of game discovery and platform news. With data sprinkles and a final visual cherry on top. And yes, this tortured metaphor is thankfully finished. Onward:

• What’s this - PlayStation Now retail subscription cards are no longer available to purchase via GAME in the UK? Presumably the PlayStation Plus relaunch is getting exponentially closer, then. We await it with relish - it’ll be nice to have some semi-meaningful console subscription competition.

• Humble Choice seems to have been struggling a bit recently, and they’ve simplified their sub deals as a result. There’s now one plan at $11.99 USD per month (or local equivalent), you get all the games, and Humble has added a standalone PC game launcher for games they own specific rights to (Humble-published and ‘Humble Trove’ titles.) Let’s see if that helps.

• Microlinks: Twitter reports 2.4 billion video game Tweets in 2021, with a ranking of top games (above); here’s the Japanese digital console game rankings for December 2021, with some impressive Among Us rankings; more on the ‘child game devs of Roblox’ and how that can create some very bad situations.

• It’s interesting to look at how much movie/TV subscription services are paying for content, compared to what video game sub services may be. For example, according to the FT [sub required], HBO Max/Warner is spending $18 billion in 2022, Disney may spend $33bn and Netflix could spend $17bn. Will we ever see this kind of third-party spending in games? With F2P/IAP as an ‘upsell’ model in the console sub space, we doubt it. But it’s interesting to speculate.

• Happy that PlayStation released its top-downloaded games of 2021 across PS4 & PS5 (GTA, Minecraft, sports, CoD, Miles Morales), PSVR (dominated by Beat Saber & Job Simulator) and F2P (lots of Fortnite & Rocket League & some CoD: Warzone). But seriously Sony, can you sort your real-time charts on PlayStation consoles? I just don’t know why you wouldn’t have accurate ones in the Year Of Ken Kutaragi 2022.

• Erik E. Johnson noted that after a brief return, Steam’s ‘Weeklong Deals’ promo option isn’t getting a front page ‘highlight’ button much any more. If you use them in your game discount strategy, that’s worth noting. One of our Plus Discord subscribers actually asked Valve about this via a support request, and they replied: “Sometimes we still have space for the widget on the front page… but you're right in that it has reduced visibility these days.” So bear this in mind!

• Microlinks, Pt.2: guess Sony was thinking of stopping PS4 production early, but now isn’t because of PS5 shortages; the Game Developers Choice Awards nominations are led by Deathloop, It Takes Two & Forza Horizon 5; Apple has submitted its plans on how the iOS App Store would support third-party payments to South Korea, since the government, uhh, made them.

Finally, the folks at game history database MobyGames have updated their ‘the entire history of game releases’ to account for 2021 games (click here for the hi-res):

There’s definitely biases inherent in this, since everything needs to be manually ‘scraped’ by a MobyGames contributor. So we’re lacking recent releases, hence the incorrect decline, Android & iPhone are under-represented, and Linux is probably over-represented vs. Windows. But it’s still a hell of a graph!

[We’re GameDiscoverCo, a new agency based around one simple issue: how do players find, buy and enjoy your premium PC or console game? We run the newsletter you’re reading, and provide consulting services for publishers, funds, and other smart game industry folks.]