Bergervoet is a Dutch fellow who goes under the developer name Multigames. In 1998, probably about two or three years after RSD pulled support for Game-Maker, he found the software and threw together a few games. For his inspiration… it’s not that he just lifted sample material and called it his own; he drew all his own sprites and tiles, and I think recorded most of his own sound effects. And unlike Felix Leung it’s not that he directly quoted popular references and based a game around them. Strictly speaking, everything in his games is original. It’s more that his games are strongly inspired by other, existing games.
There’s nothing unusual about that, of course. Without Mario Bros. we wouldn’t have Bubble Bobble. Without Bust-A-Move/Puzzle Bobble, we might not have a casual game industry. What’s unusual is that all his games are based on, well…