true, but as long as you don't copy the original graphics too closely then you're okay. I did try to release a version of space invaders that used some of the arcades graphics but google banned it, but they are okay with my current versions.
I plan to move onto pacman, nibbler, break out and centepede next. But i'll need to think of how I can change them to stop them being too close. I know I could write original games, but I want to get a lot of downloads so I can make a living from this, then I'll be more original once I have the income from the copies to back me up. But right now I don't have time to work on original content as I'm too busy at my day job, so if copying other games gets me out my day job, then I can do the right thing and write something original. I have this great idea about a plumber who jumps on turtles so he can rescue a princess that's been kidnapped by the king of the turtles, it's crazy idea and I know I'll never get a publisher to go for it so I'll go it alone, failing that I've another idea about a ten year old boy who takes on heavily armed soldiers with a wooden sword and shield to save a princess from a wizard, with nothing but a small fairy to help him, again, can't see a publisher helping me out but will see what I can do on my own