Fling

From CC Wiki

Fling is a game that was announced at the start of 2009 by Critters. Since then nothing was heard of it. Critters started working on Backyard Monsters after it was announced. Backyard Monsters has 'flinging' as a core feature; monsters are flung into others' bases and resources get flung from building to building. So fling was probably a reference to this game.