How a German developer spent four years building a game from scratch, documented every step publicly, and opened his Steam dashboard live on Twitch to find his family's life had changed.
Cakez — known online as Cakez77 — is a German Twitch streamer, YouTuber, and, as of March 9, 2026, an indie game developer with a game that sits at 89% Very Positive on Steam. Before that last title, the other two mattered most. For four years, the streams and YouTube videos were what kept the game alive.
He had no game engine. He built Tangy TD in raw C++, a decision that extended the development timeline significantly but gave him complete control over every system in the game. The skill tree, the item combining mechanic, the tower class framework — all of it written by hand, debugged by hand, iterated by hand, at a development pace constrained by the fact that he was doing it entirely alone.
A 2020 video on his channel captured the honest early difficulty: he reflected that he "was very arrogant to think I could start and finish a project." It was not arrogance that carried the game to completion. It was something closer to stubbornness, and eventually, purpose.
The game grew alongside his life. He got married. A child arrived. The project that began as a young developer's ambition became something he was building toward a specific, concrete goal: financial independence for his family, on his own terms, making something he was proud of. The "only if it works out" qualifier was the honest acknowledgement of what solo game development usually looks like for the thousands of developers who never reach the finish line at all.
March 10, 2026. One day after launch. Cakez went live on Twitch, opened his Steamworks Sales and Activations Report in front of his audience, and watched the numbers load.
The mathematics of that number, for a solo developer, are worth pausing on. Steam takes 30% on most titles until higher earning thresholds are reached, meaning the net was roughly $26,000. But $26,000 in 30 hours, for a $9.99 game built entirely alone, over four years, with no marketing budget and no publisher — it was the kind of number that changes what you think is possible.
The clip spread in the specific way that genuine moments spread. Not because it was staged. Not because it was surprising that an indie game sold well. But because it was a real person, live on camera, discovering that four years of sustained effort had paid off in public, with his wife running in from another room, and no performance in it anywhere. The comment section on every platform that shared it said the same thing: "this is why I love the internet when it's not being terrible."
Many of those reviews follow the same structure: saw the clip, bought the game, enjoyed the game. The viral reaction did not just attract curiosity — it attracted people who specifically wanted to reward the effort behind it. That alignment between the story and the product quality is what sustained the sales trajectory through the first week and into the second.
A week after launch, Cakez sat down in front of his community again. By then the first clip had driven enormous awareness. MoistCr1TiKaL had played the game. Sodapoppin had played it. Dozens of YouTube creators had covered the story. He was visibly holding back emotion before the page had even loaded.
The numbers inside that number are worth understanding. $245,123 gross. After Steam's standard 30% revenue share, the net was $197,847. Spread across four years of full development time, that is roughly $49,000 per year — before taxes, before ongoing development costs, before the continuing patches and updates that followed launch. Kotaku noted the raw math: "working out to $34,600 a year. Just in case you were planning on ditching your job."
Which is both accurate and beside the point. A solo developer does not typically build for four years betting on $34,600 a year in return. The game's sales have a long tail — many players who discovered it through news coverage have not yet purchased, and future updates including the anticipated v1.1 will drive another wave of attention. The week-one number is a floor, not a ceiling.
Cakez's own words in the stream were not triumphalist. They were grateful and bewildered in equal measure. He was not celebrating a strategy that had worked. He was not describing a business plan that had executed. He kept returning to the same phrase: "I don't know why people are so nice." The success, to him, felt unearned — which is its own kind of telling detail about someone who spent four years building something without any guarantee it would find an audience at all.
The story of the reaction clips can obscure the reason there were reaction clips in the first place. Players bought the game because the viral moment made them aware of it. They stayed — and left 89% Very Positive reviews — because the game is good.
Tangy TD is not a viral novelty. It is a genuinely well-designed roguelite tower defense with depth that reveals itself across multiple runs. The item combining system, the 300+ node skill tree, the class-based tower mechanics, the Lone Ranger positioning puzzle — these are systems that took four years to build because they required four years to get right.
The Steam reviewer who wrote "Love a game dev that doesn't expect anything" was describing a real quality of Cakez's public presence during development and after launch. He responded to feedback, acknowledged bad balance decisions publicly, patched the game multiple times in the first two weeks, and thanked translators by name. The community that formed around the development over four years was not just an audience — it was a relationship. People felt invested in the game's success because they had been invited to watch it being made.
Tangy TD's story landed in a specific moment in the gaming industry. The year leading into its release had been defined by studio closures, mass layoffs, and a recurring public discourse about the difficulty of building a sustainable career in games. Against that backdrop, a solo developer opening his Steam backend live and seeing four years of work validated by a quarter million dollars in a week was — as Kotaku put it — "tremendously something that is just unambiguously good."
The story also landed on an important practical point about how we assess games. Tangy TD's all-time concurrent player peak is 795. Its nightly peak as of the week-one stream was 462. By the standards applied to live-service games from major publishers, these numbers look small. They represent a quarter million dollars for one person. The game does not need a million concurrent players to be a success story. It needs 28,000 people to spend $9.99 on it in a week — which happened, and then some.
The Steam review Cakez was most likely to have seen in those first days was one that contained everything about the moment in a single sentence: "Saw the reaction vid. Bought the game. It's pretty good." That sentence is the whole arc. Discovery through viral emotional honesty, purchase driven by a desire to participate in something genuine, quality confirmed by the game itself.
Cakez did not take a break after the week-one numbers dropped. The first two weeks post-launch included three patches — a launch hotfix (v1.0.1), a major balance pass that addressed the Bay Harbour Butcher's unfair difficulty and added the aggro meter system (v1.0.2), and the Cauldron Update that added eight new items, a pause feature, and language selection (v1.0.3). He had been receiving feedback, and he was responding to it.
In a Twitch stream on March 16 he teased upcoming content including a new map, a rework of Tangy's direct combat skill kit (which the community had flagged as underpowered), and additional Legendary items. A leaderboard reset is expected to coincide with v1.1 — the first competitive season of Endless Mode ending cleanly before new content opens the second.
The game's player peak of 795 concurrent suggests a highly engaged but not enormous active player base — which is consistent with a $9.99 roguelite tower defense that people complete in 5–8 hours and then return to for Endless Mode runs rather than playing casually every day. The long tail of sales, driven by ongoing coverage and word of mouth, is likely to be substantial.
For Cakez personally, the outcome of those four years is what he described in the week-one stream: providing for his family while doing something he loves. He was wrong that he didn't deserve it. Four years of C++, public development, hardware failures survived with community support, and a game shipped entirely alone that holds 89% Very Positive from 467+ reviews — that is what it looks like to deserve something.