Interview
October 26, 2026
Meccha Chameleon: How two devs built the indie smash hit of the summer
Fuelled by the fun-packed, chaotic video clips that flooded social media upon its release, Meccha Chameleon effectively ‘went viral’ earlier this year, becoming the indie smash hit of the summer and selling an impressive 1,000,000 copies in its first four days.
The game was created in Unreal Engine in two months by Japanese developers Lemorion_1224 and Haganeiro—a team of two who had started out by building Fortnite experiences with Unreal Editor for Fortnite (UEFN).
Impressively, the duo developed the game with UE5 in just two months—and were eventually able to ramp up to a peak of 340,000 concurrent players by leaning on Epic Online Services to handle the networking and backend infrastructure.
Their rapid rise to success mirrors a broader trend in the games industry—empowered by production-ready tools available out of the box, indie developers are now delivering some of the most innovative gameplay experiences to players.
Read on to find out how the game outpaced many of 2026's biggest titles, selling more than 20 million copies and counting.
The game was created in Unreal Engine in two months by Japanese developers Lemorion_1224 and Haganeiro—a team of two who had started out by building Fortnite experiences with Unreal Editor for Fortnite (UEFN).
Impressively, the duo developed the game with UE5 in just two months—and were eventually able to ramp up to a peak of 340,000 concurrent players by leaning on Epic Online Services to handle the networking and backend infrastructure.
Their rapid rise to success mirrors a broader trend in the games industry—empowered by production-ready tools available out of the box, indie developers are now delivering some of the most innovative gameplay experiences to players.
Read on to find out how the game outpaced many of 2026's biggest titles, selling more than 20 million copies and counting.
©LEMORION
A fresh twist on a tried-and-tested genre
Sometimes, the simplest ideas are the best. Meccha Chameleon takes Prop Hunt, the hide and seek genre that took off in mods and UGC, and gives it a clever twist.Unlike a classic Prop Hunt, where players disguise themselves as everyday objects, hiders in Meccha Chameleon use a simple painting tool to camouflage their characters so they blend in with the scenery. Seekers then come and try to find the hiders and, just so they really know they’ve been spotted, shoot them.
As developer Lemorion explains, it’s the manual artistic aspect that sets this game apart from others in the genre. “It’s not just hiding spots and poses, but how well you can paint—your drawing skill—that determines the outcome,” he says.
That inspired take on a tried-and-tested genre was conceived after Lemorion remembered an artist on television painting themselves to blend into their surroundings. By converting this idea into a neat game mechanic, the developers stumbled upon an idea that is manic, silly, and brilliantly inventive.
©LEMORION
Learning hyper-agile game development in UEFN
Lemorion and Haganeiro are part of a new generation of indie devs who have come up developing games in ecosystems like Fortnite. Their approach to building games can perhaps best be described as hyper-agile—characterized by rapid prototyping, instant deployment, and continuous iteration.Formed inside an existing digital playground, the experiences these devs create are inherently community-driven and social-first.
Given the fast-paced, experimental ethos of this cohort, it’s no surprise that Lemorion and Haganeiro earned their spurs by rolling up their sleeves and jumping straight into UEFN's rapid-iteration toolset. “I spent about a year and a half on UEFN making roughly 30 games across genres like horror and PvP, then started developing for Steam, mainly horror games,” says Lemorion. “Meccha Chameleon is only my second multiplayer game.”
That’s a prolific output and as Lemorion points out, during those formative months, the duo developed numerous games across a wide range of genres. Because UEFN lends itself to quick builds and rapid deployment—while also offering creators a direct way to reach Fortnite’s existing audience—Lemorion and Haganeiro had room to experiment widely. It was during this process that they began exploring the hide-and-seek mechanics that would eventually evolve into Meccha Chameleon.
©LEMORION
A natural crossover to UE5
When it came to choosing an engine for Meccha Chameleon, Lemorion and Haganeiro made the decision to go with UE5. The fact that the editor structure across both toolsets is nearly identical appealed because they would be able to work intuitively and hit the ground running.They applied the fast agile development style they’d learned in UEFN in order to learn the ropes in Unreal Engine.
“At first, I made a simple horror game with almost no game rules and simple mechanics just to learn the process from start to release,” says Lemorion. “After that, I kept reusing the same project, improving on what I'd made before with newly learned knowledge, and learning by trial and error how to use things like GameMode and GameState.”
The intent was to make a small-scale mini-game with an agile UEFN mindset. As Lemorion explains, that meant building, playtesting, implementing feedback, and iterating in a one continuous, rapid loop.
©LEMORION
“I first build out the minimum overall system so it runs,” he says. “Then I add graphics and playtest in parallel. By adding features, gathering feedback, and debugging simultaneously while the game is minimally playable, I was able to develop it quickly.”
It took the team two months to finish the game.
Looking back, Lemorion credits Lumen as the standout feature that really made the difference. “I wanted a fairly realistic look for the game's graphics, but light baking made the dynamic characters look disconnected from the environment,” he notes. “Using Lumen let the characters sit naturally in the scene, achieving the look I wanted.”
Because the game hinges on players’ abilities to blend into the background, delivering realistic lighting was crucial. Lumen’s dynamic lighting and shadows helped everything respond consistently to the scene, making it possible for players to disappear naturally into darker areas or amongst surrounding objects.
It took the team two months to finish the game.
Looking back, Lemorion credits Lumen as the standout feature that really made the difference. “I wanted a fairly realistic look for the game's graphics, but light baking made the dynamic characters look disconnected from the environment,” he notes. “Using Lumen let the characters sit naturally in the scene, achieving the look I wanted.”
Because the game hinges on players’ abilities to blend into the background, delivering realistic lighting was crucial. Lumen’s dynamic lighting and shadows helped everything respond consistently to the scene, making it possible for players to disappear naturally into darker areas or amongst surrounding objects.
©LEMORION
Scaling to 340,000 CCU with Epic Online Services
The game was an instant hit after its release, and quickly grew to over 340,000 concurrent players. That rapid expansion might have caught other developers off guard.With the game built around player-hosted lobbies—where performance relies heavily on an individual host's CPU and network—scaling to hundreds of thousands of players could easily lead to severe lobby instability, crashes, and server timeouts.
But from the beginning Lemorion and Haganeiro had implemented Epic Online Services—a free suite of cross-platform developer tools created by Epic Games to help build, launch, and scale multiplayer video games.
They could rely on EOS’ battle-tested cloud backend to offload the heavy lifting of multiplayer architecture away from local game hosts and onto Epic's massive global network.
“I didn't have to do anything special even as concurrent players grew,” says Lemorion. “Because EOS was completely free to use, I could develop without worrying about the risk of a huge bill.”
For a team of two, having EOS automatically handle the backend routing, matchmaking infrastructure, and server relays meant they could focus on building the game rather than maintaining complex online infrastructure themselves.
©LEMORION
Build it and they will come
Meccha Chameleon proves you don’t always need a huge budget, hundreds of developers, and years of experience to achieve success—a great idea can take you a long way.But great ideas need fertile ground to flourish.
By adopting a hyper-agile development mindset from their UEFN days, leveraging UE5’s powerful toolset, and leaning on EOS for backend support, Lemorion and Haganeiro were able to give their creative vision the best chance of success.
Perhaps the biggest testament to what these two innovative developers have achieved is how Meccha Chameleon found its audience: through that oldest of marketing tactics, word of mouth.
Ultimately, when you’ve created something truly special, the players do the selling for you.