Why location-based games actually work — and what Brain Rot IRL learned from the genre

A genre with a short but loud history Location-based gaming as a genre is barely a decade old. Ingress shipped in 2013. Pokémon GO shipped in 2016 and rewrote the public understanding of what mobile games could do. A wave of imitators followed and almost all of them failed within eighteen months. Today only a handful of location-based games are still commercially active, and almost every one of them has had to substantially redesign its core loop at some point to survive.

Brain Rot IRL sits in this lineage and learns from it deliberately. This article is an honest write-up of what the genre teaches and how we apply it.

What makes location-based games actually work The core mechanic is simple and underrated: real-world movement maps to in-game progress. That single design principle does three things at once. It turns ordinary walking into a reward loop, which is why so many players report measurable health benefits within a few weeks. It generates infinite content for free, because the real world is infinitely large and infinitely varied. And it forces social emergence — when you and a stranger walk past each other chasing the same spawn, you both look up.

No other genre delivers all three of those benefits simultaneously. This is why location-based gaming is going to keep producing successful titles long after the current hype cycle ends. The fundamental design lever is too strong to abandon.

What kills location-based games Three failure modes account for almost every dead title in the genre. The first is install friction — making the player jump through ten hoops to start playing. By the time they have downloaded a 500MB app, created an account, allowed three permissions and finished an onboarding tutorial, half of them have already churned. Brain Rot IRL is browser-based specifically to attack this failure mode. Open the website, allow location, start catching. No install.

The second failure mode is pay-to-win monetisation. Gacha mechanics, premium-currency catch boosters, time-skip purchases — these all destroy the long-term retention of a location-based game faster than they boost short-term revenue. The catching loop has to feel earnable through walking, not skippable through spending. Brain Rot IRL is ad-supported, free, and has no gacha. We will not change this.

The third failure mode is sparse spawning. If the player walks for twenty minutes without an encounter, they stop trusting the loop. Most failed location-based games shipped with spawn densities that worked great in San Francisco and Tokyo and produced empty maps everywhere else. Brain Rot IRL's spawn algorithm uses a sliding density floor that guarantees at least one encounter per ten minutes of walking, regardless of where the player is on the planet.

What makes a sustainable catching loop Two design constraints have to hold simultaneously. The catching loop has to be rewarding enough that players want to do it. And the catching loop has to be effortful enough that doing it feels earned. Get the balance wrong in either direction and the loop collapses — too easy and players burn out, too hard and players never start.

The lever that works best for managing this balance is rarity bands. Common Rotmons exist to make the loop responsive. Rare Rotmons exist to make the loop feel directional. Ultra Rotmons exist to give the loop a daily chase target. Mythic and Limited Rotmons exist to give the loop a long-term aspiration. Skip any one of these bands and the loop loses a temporal scale — the day, the week, the month, the season — that holds player attention together.

How Brain Rot IRL applies these lessons We made four hard decisions early. Browser-only, to kill install friction. No gacha, ever, to protect the long-term retention curve. Five rarity bands, to span the full temporal-attention range. And a rolling content cadence — new Rotmons within the same week a meme goes viral — to keep the dex feeling alive rather than archival.

Those four decisions cost us things. We give up the polish ceiling of native AR. We give up the revenue ceiling of premium currency. We pay an ongoing content cost that most studios would refuse. In return we get a game that an eleven-year-old in any country with a smartphone can play within sixty seconds of hearing about it. The trade is correct.

What the genre is going to do next Three trends are accelerating. Shared AR anchors will let multiple players see and interact with the same in-world creature, which unlocks genuine co-op encounters. Privacy-respecting offline play will let players progress without constant GPS uploads, which addresses the biggest single objection from privacy-conscious users. And browser-based AR will close most of the remaining quality gap with native, which collapses the install-friction problem for the rest of the industry.

Brain Rot IRL is positioned for all three. Browser-native already, privacy-light by design, and watching the WebXR spec closely. We will ship features along these lines when they meaningfully improve the catch loop, not before.

Keep reading - [About Brain Rot IRL](/about) — the team and the project's story. - [AR gaming explained](/news/ar-gaming-explained) — what augmented reality really is. - [How to play](/how-to-play) — the full tutorial.