Quenq positions itself as a free interactive museum of internet culture, letting you play classic games and run retro software in your browser without any downloads or paywalls. For that purpose, the site is likely legitimate — the infrastructure is solid, the domain is a few years old, and they've put effort into privacy and terms pages. The main thing missing is transparency: there's no named team or social media presence, which is typical for hobby projects but means you can't easily verify who's behind it.
If you're just exploring the arcade and app library, the risk is minimal. Unlike e-commerce or financial sites, you're not handing over payment details. The biggest watchpoint is if they ever ask for registration or personal data — treat that with extra caution given the anonymous ownership. For casual browsing of preserved digital artifacts, Quenq appears to deliver on its promise without obvious scam signs.