Best game ever
Ah, that fateful year of 1985 which changed the world forever.
Lots of people think they'd like to make a tribute to Zelda or Mario or Duck Tales or whatever, but it looks like you've realized there are just too many games to give tribute to and so you're paying them all tribute at the same time.
The one hit kills are always annoying, especially in the Megaman level when you get hit by the lasers and have to go so far back. In the Contra levels, I became convinced I had unlimited lives but then finally ran out while fighting the boss of the second level and then had to go all the way back to the beginning of the first!
All the same, I have to remember that you've made everything considerably easier than those NES originals in order to appeal to a modern audience. It just goes to show you what gaming has become where everyone's spoiled by how easy everything is.
I actually played The Legend of Zelda recently and so I instinctively checked every block in every room by trying to push it from every side. I also checked every wall for secret passages by trying to walk through them. That's right people, that's how the original Legend of Zelda was played. Needless to say it was a relief to finally beat that monster of a game. (In case anyone's wondering, no I didn't find anything in Zeldabobo that way.)
When I realized I could hurt the fire on the bridge in Contrabobo, I knew I couldn't stop until I killed them. I just kept shooting at them and using the special power for over 5 minutes. It was like revenge for every invincible enemy I had ever encountered in any game.
Anyway, great work. Is Annie the Mermaid from a real game? She's hot.