It seems as if the developers of Awesomenauts have an affinity for retro games, as the PC version of Awesomenauts has a hidden 8-bit Smash Bros-esque game embedded in the Steam download. All you have to do is head to the following directory to access the game:
All in all, it’s great to see indie developers packing in extra content just for fun, rather than gating it behind many industry standards we deal with today. There’s no AI component, and it’s local play only, so grab some friends! You also can’t remap the controls, so try remapping them with a program like Joy2Key, and playing with some gamepads.