Achtung, die Kurve!, also known as Curve Fever or simply Achtung, is a freeware, multiplayer DOS computer game that supports from two-player up to eight-player gaming simultaneously. The game is a clone of another Czech DOS game Červi (Worms) from 1993, differing in that the lines now have holes. Author is Filip Oščádal, aka Fred Brooker, from the Czech Republic who made this game, together with Kamil Doležal, for Commodore Amiga including music, sound effects and graphical background (worm speed depending on the picture). The game was written in Motorola 68000 assembly. The DOS game is supposedly from 1995 and written in Borland C++. The title is in German language.