AI tools used (or “None”)
Claude Code

How I built it / process notes
Built entirely in conversation with Claude (Anthropic) as a coding partner: I described the idea, gameplay and look, Claude wrote the HTML/JavaScript, and I tested on desktop and phone and iterated on difficulty, UI and bugs. Paintings are public-domain masterpieces; the "forgery" differences are generated in code on top of the originals. English is the main language, German is available as a second language.

How does your game use the theme?
The trick is the forgery. Every painting in ArtTric has been faked by a cunning art forger who slipped tiny, deliberate changes into famous masterpieces like the Mona Lisa or Girl with a Pearl Earring. You play the expert appraiser: compare the original with the copy and expose every trick before you're fooled into certifying a fake as genuine.