Quardiddl Cards is a collectible card game built around the Diddl franchise, a German stationery and character-goods brand created by artist Thomas Goletz in 1990. Diddl himself is a white jumping mouse with oversized ears and large pink-soled feet, and the wider cast includes characters such as Diddlina, Mimihops, Pimboli, Galupy, and Professor Diddldaddl Bubblebang. Depesche, the Hamburg-based consumer-goods company behind the Diddl product line, published the card game as part of a broader push into collectibles during the character's European popularity peak in the late 1990s and early 2000s. The game carries a name that is itself a Diddl-style portmanteau, blending the German word Quatschen (to chat or joke) with the character's name. Depesche eventually wound down the Diddl product range by the end of 2014, with rights reverting to Goletz, and no further editions of Quardiddl Cards appear to have been issued after that. Collector copies and instruction booklets circulate occasionally on eBay and European trading-card marketplaces. Documentation of the game's specific rules and full card roster is scarce, which is exactly why it belongs in the uncharted archive.
Source: en.wikipedia.org/wiki/Diddl