The Clonk game series was a mainstay of the German shareware scene in the 90s and early 2000s. It's a little difficult to fit into contemporary mainstream genres, but describing it as a three-way cross between Lemmings, Worms and Settlers may give you an idea. Basically it's a 2D (side view) game featuring teams of little guys battling each other in a destructible landscape which also contains resources that can be mined. As of this writing, the Clonk games are no longer distributed commercially and the core developer community has mostly moved to OpenClonk.
From version 4 onwards, the Clonk games also included an incredibly extensive modding interface consisting of schemas for object definitions and a C-like scripting language called C4Script to drive object behavior. While most mods changed or extended the core gameplay, every so often someone would use the engine to implement a completely different type of game. Memory was one such project.