I'm guessing no one else knows about this old game. It's an old 1998 2D sidescroller platform game called Speedy Eggbert. There is also a Speedy Eggbert 2. The games have a lot of levels, a level editor, and multiplayer. (Unfortunately, the game is somewhat unpopular, so no one's ever on multiplayer.) This was the first computer game I ever played, so I like it a lot. I doubt anyone else has it, but if you do, I'd like to hear about it.
Wikipedia: en.wikipedia.org/wiki/Speedy_Eggbert
Pics:
Wikipedia: en.wikipedia.org/wiki/Speedy_Eggbert
Pics: