Insanity

Time travel

Freeing animals from zoo

controlling 12 "monkeys"

identify shakespeare play from twelve words

you have only twelve monkeys, write shakespeare

Sputnik era spacecraft with monkeys crashing on the moon they need to build a colony

Programming Windows Vista with monkeys

Dance Dance revolution

how many monkeys fit in the fridge

over the top, visual

"gimme the cash!" (photos as pretend prop hats)

rock paper scissors lizard + trump

four elements + a trump

level selection for different parts of the movie

fridge tetris

assassins guild

progress through guild

manage the guild

fantasy adventure

fighters

clerics

not an MMO

Discworld guilds (assassins, thieves)

milk the parts of the city - balance crime  / prosperity

Having to provide protection to an area of the city (hire spotters and enforcers). struggle with other thief families for control of the guild (they try and steal from your protected areas, you from theirs). Build the city and get support from the citizens, build business, pull off crimes. I don’t know you you'd blame that on other families though but that would be a good mechanic.

alamaze like (turn based) thief family simulator

Moon Nazis

Clones

Sneaky about helping future clones

Time dependant clones

A location

Alien vs humans

Cheese (cannons, jules verne style)

Moon Cheese Nazis

Rockets

Climate change through terra forming

gravitational / celestial stuff (Planetary creation code: http://znark.com/create/accrete.html)

city building

Martians on the moon send lone Invader Zim to prepare for invasion of Earth

or the above as a farming game (farming humans)

Moon

fighting

defence

floating castle, magic pendant - glowing mcguffin

chase scenes

air battles

air pirates

3D tower defense

manage an isolated (self-contained?) city