htmx Ships '4.0' as a Game Boy Cartridge Where You Fight for the Source Code

The htmx project’s merch store is selling htmx 4.0 as a physical Game Boy game rather than a software release — a gag riffing on the library’s minimalist, anti-JavaScript-bloat ethos. Billed as the first JavaScript library to launch exclusively on Nintendo’s handheld, the cartridge is a four-level platformer about collecting pickles and squishing client-side JavaScript down to size.

The bit has a punchline for developers: beating the final boss, Warren, reportedly unlocks the htmx 4.0 source code, turning a version release into a game you have to win. The product page plays it straight, complete with a made-to-order quality guarantee and a no-returns policy, which is what pushed it onto Hacker News as an in-joke about the project’s culture.

There’s no actual technical substance here — it’s satire and merchandise from a team known for poking fun at heavyweight front-end frameworks. The appeal is entirely cultural: htmx leaning into its reputation for keeping the web simple, packaged as retro gaming nostalgia.