Locomalito did a remake of Gaurodan, using what I assume is the same engine he used for Toxic Tomb (although maybe this is just a newer GameMaker version; I don't know). When I saw a new version of the game was out, I thought it might be just a port to the newer engine, but the gameplay is different. For starters, this is the first level, which had no flying in the original and was just egg mode.
>Linux...?
Oh, right. Works on my GNU/Linux™ machine. I'm using Bottles just because I was already using it for non-Steam non-Linux games, but I'm pretty sure it would run with just Wine as well.