Stick the FCs on the walls around the classroom, just like with the This, That game. The students gather in the centre of the room. The teacher calls out one of the FCs. The first student to point to that FC wins a point for their team.
You’ll need a quick scoring system for this game in order to keep the pace going. See Association Drill and Hit for examples.
you’re playing, you can optionally encourage the students to make gun
shapes with their thumb and fingers so that rather than just pointing to
the FCs, they are shooting them. It is also fun to name the student who
was first to shoot the FC each time, thus offering encouragement, etc.
a follow up to Shoot ’em Up, I often get the students to go round in
pairs, pointing to each FC on the wall, asking and answering target
language questions. For example if the FCs are for colours, the students
could be going round in pairs saying, “What colour is it? “It’s
[blue].” If the FCs are for food, they could be asking, “Do you like
[Lasagne]?” “Yes, I do.” Or if the FCs are for animals (plurals), they
could be asking each other, “What are they?” “They are [giraffes].”