Desktop Frogger Arcade is true to the 1971 original
That's right, we said 1971. Many of you are thinking, "Wait a second, I thought Frogger came out in 1981. Must be a typo." Well, you, sir (or ma'am), are incorrect. Frogger was developed in 1971 by the University of Washington Psychology Department as some sort of prize / reward for completing a short-term memory test. Someone at Konami stol..er...borrowed the idea and released it on the Atari in 1981. Thank you, Wikipedia, for making us look oh-so-informed.
Vat19 has it for $29.95: Link