The name was only kind of familiar, so I googled it and WOW! I remember playing it and loving it. One of those things I would never remember spontaneously. Thanks for that!
I remember mostly because of the frog! Although, judging by the screenshots I saw on Google, I didnt go very far in the game. Only a few looks familiar.
DOS PCs were the lead release for Willy. There are two versions as well, the floppy original which supports the soundtrack on MT-32, and a CD "multimedia PC" release which is basically the Sega CD version in 256 colors(no MT-32 sound, just SB/Adlib).
The game has some clockspeed bugs on DOS, though. The animations play at the correct rate, but timers that use the in-game clock will fire too fast above about a 66mHz 486 speed. This left me stuck on a puzzle for a few years, since I first got to play the game in the late 90's and it wasn't obvious that I had a bug.
