In a book I used previously back home for teaching, there was a section for the 2nd conditional.
It set up hypothetical situations....which had real answers...and the students would have to choose which was correct and explain why.
The theme was Survival....so you can obviously edit this you way, maybe with powerpoint etc
Set up the questions, put them in teams. Give them 3 possible answers, and they have to choose the correct one...and explain why.
Also give points per answer if needed and see which team wins..
Example : What would you do if a bear was running toward you ?
a: If.........................I would climb a tree
b. If.........................I would pretend to be dead
c . If ........................I would run away
In this case the correct answer is B, you can research this and explain why after they have chose and tried to explain their answers.
Other survival questions should be easy to find, I know that the TV reality show 'Survivor' used to have quizzes with such questions all the time, and Bear Grylls probably has some ridiculous knowledge out there too