iirc, original Z had a 2v2 co-op mode.
Either way, I'll probably just get the Android version that came out last year so I can play it in bed.
edit: omgwtfbbqffs the
iOS version has multiplayer, while the android and PC versions do not.
edit2:
Klon - iirc the Win95 version had 2v2 IPX mode as well as modem-based 1v1.