Hi Bananasbananas,
Space Invader was very hard to play while flying in the PACOTS, but over Siberia, there are some variants that will keep you occupied for a while, one of them here after:
CM1 And CM2 each choose a wpt/sta/arpt/fix on his side of the magenta track, then they shoot each in turn at a letter of the TO waypoint. The entire name has to be out before the waypoint symbol can be aimed at, and the winner is the one who wipes it before it vanishes at the bottom of the NAV display.
For the ones in solitary confinement in the Far Eastern Morning Calm, there is the one that consist of discretely typing ONE space in Effonida's MCDU, and then time him until he finds out while trying to insert his thingies in it. Watching his face in the process will keep you entertained for the rest of the cruise.