In On5/Chillingo's Spice Bandits, what level, or what other unlock criteria do you need to be able to play co-op mode on levels?
I am level 17, but as yet have not been able to start a co-op mission.
It is not when you complete all the single player. You get it just before the Italy level, I forgot which one exactly D:
You need to beat the single player game in order to play co-op.
Spice Invaders? To earn co op, just start doing the Sudden Death and multiplayer vs's missions when you unlock them (as in, when you unlock new modes, go back to the first lvl and play the new modes on them) and eventually, you will hit a mission that has co op as the unlockable mode. You don't need to complete the whole game.