It wasn't the first by about two decades, but to most, the one true version of Snake was found on late-90s Nokia cellphones. One Amsterdam-based developer decided to try and recreate that magic — the result of which is Snake '97 for Windows Phone 7.5. The "homage" includes not only the tiny, monochrome dot-matrix display but also the surrounding 5000-series faceplate so you can use the 2, 4, 6, and 8 keys to grow your virtually harmless reptile one nondescript food item at a time.
The original sounds and the nine original (plus two extra) difficulty levels are there and the high score again can't be reset. The price is $0.99, which is an absolute steal for what you're getting, but those still unconvinced can download the free trial that works up to 250 points. Nokia Lumia owners can get a real kick out of the juxtaposition between its on-screen legacy on modern hardware, but the app works on any Mango, including our HTC Titan. Seriously, if you have a Windows Phone 7.5 device, why are you still reading? Go download now. You're welcome.
Update: It also came out earlier this month to Android devices (free but ad supported), and late last year for iPhone and iPad (free trial and paid) — neither of which will, unfortunately, let you enjoy the irony of playing on modern Nokia devices.