A great little retro game! Being able to choose between different versions of the game is a nice touch and all three versions seem pretty authentic. Fitting soundtrack and cute characters.
There might be a bug with the scores. When I broke the high score for the first time, it added my score twice to the top of the list, so that there was a first place with my initials and a second place with the same score and the default ABC name. The score was 5220, so that wasn't one of the default high scores. Also, my score wasn't reset to zero on my second try, instead I started with 5220 points and only one life. I switched from Arcade to 2600, maybe that helps identifying the bug.
But then again, games for those type of consoles almost always had bugs, so...maybe that's more of a feature? ;)