Looking for a game

I am looking for an old game (c. DOS 6/Windows 3 era), similar to Tetris, which involved connecting four blocks of the same colour to cause them to explode with comical sound effects. Extra points were given for chain explosions, and there was a vertical split-screen mode in which two players could play by sharing a keyboard.

I think it was called 'Pyromania'.

Does anyone know the one?

Klax?

I don't remember a dos game but it sounds like you're describing puyo-pop fever. I had the xbox version and it was great for parties.