Adventure · Roguelike · made with Cursor
The Underground
Explore generated tunnels, open locked doors, and find artifacts before time runs out.
About The Underground
The Underground is a roguelike adventure that sends you into a network of dark, subway-style tunnels with a timer running. You open locked doors, track down hidden artifacts, and work out where to go before the clock runs out.
The idea came from the creator's curiosity about what lies down the dark tunnels you see from a subway train, such as abandoned stations or old bunkers. The Vibe Jam 2026 build runs on Three.js and was made with Cursor, and it ranked 408th of 945.
The layout is procedurally generated rather than hand-built, so the network is endless in principle and each descent leads somewhere different. Other players can leave clues for you to find, which turns the search into a loose collaboration between strangers.
How it was made
Most of the code was written by AI. Source: Vibe Jam 2026 submission form.
Evidence: the creator's own account.
Questions about The Underground
Is The Underground free to play?
Yes. The Underground runs in your web browser at no cost, with no download or account needed.
Which AI was used to make The Underground?
The Underground was made with Cursor. Most of the code was written by AI, according to the Vibe Jam 2026 submission form.
Can I play The Underground on my phone?
The Underground is built for desktop browsers. It may not work well on a phone.
Who made The Underground?
The Underground was made by mythcitygames. See their profile on GamesByAI for their other games.
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