I think you should reconsider your design. Here is some constructive feedback:
1. New Super Mario Bros. was never in the arcades
2. The art style between pac-man, DK and mario bros do not match. For example, pac-man and the mario background are 3D but DK is 2D
3. None of the layers look like they belong together. (see #2) The background does't blend with the foreground.