Next time you pump in quarter after quarter,dont feel guilty ...Feel angry!!!
cause if you were in an arcade you would be quite literally getting ripped off..
The odds have been stacked against you substantially..
In many of the games i enjoy (japanese vertical shooter especially) you will see the following entries or someting similar in the dip switch settings..
note the second one in particular..


IF THE CUSTOMER IS PLAYING TOO LONG!!! :O
Oh! you actaully thought you had a fair chance of beating that game on one credit? the instant that venue owner decided you were on his machine loitering too long it raised the difficulty and saw to it you were dead so you could insert another quarter..
ive seen this setting state as boldy as "kill a player after X amount of seconds" i believe some neo geo-games sugar coatedly call this a "play timer"

I always suspected such an insidous thing, but i never knew it was true till i started collecting...
I feel a class action lawsuit coming on against all those game developers whom participated in this practice and for not putting some kind of a disclaimer stating the fact.. we were all essentially ripped off as kids..