Here is a list of games that have been ruled out of MGL12, as they have been played in the last year.

1941
1942
alex kidd lost stars
amidar
asteroids deluxe
bagman
bank panic
bombjack
burnin rubber
choplifter
circus charlie
defender
donkey kong
dr micro
exerion
galaga
galaxian
galmedes
gaplus
ghouls and ghosts
gun smoke
guzzler
joust
juno first
lady bug
liquid kids
mr do!
new rally x
pandoras palace
rainbow islands
scrambled egg
slap fight
space invaders
time pilot '84
traverse usa
xevious