You head down a stone corridor lined with skulls using nothing but the scroll wheel, or a swipe on a phone, while your gun fires by itself at the monsters coming up the hall. Scrolling only sets your speed forward or back, and the screen tracks your health, kills and distance, with a leaderboard on the title screen. The creator's write-up says kills unlock weapon upgrades, walls and spider webs slow you down, a wall of fire chases you if you stop, and the plaques on the walls show live news headlines. Its name plays on id Software's Doom. Works on phones and computers.
How the creator made it
The creator says earlier attempts stalled with GPT-4, but a broad description of an upside-down Galaga gave them a playable GPT-5 prototype in two hours. They refined the mechanics one feature at a time, then asked ChatGPT to build standalone test pages for the scenery and monsters. They tried making pre-rendered monster sprites themselves and eventually switched to simpler monsters drawn in code. For the news plaques, they adjusted sliders in a test page and sent their chosen settings back to ChatGPT to use in the game.
From their post on Bluesky ↗ and a page on ironicsans.ghost.io ↗.
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The game belongs to @ironicsans. Characters and brands it borrows belong to their owners. Image captured by us. Made this game? Here's how we list it.