--This game sounds really cool, but I'm not sure if a direct translation is reasonable. Not only would it be too short, but with all the different possible actions it might be neigh impossible. I've looked over the animation again and some parts, like the Pac/Bomber Man and the third section( the parachuter one), should be pretty simple, and with a little work and creativity, you might figure out a consistant control scheme for the Contra and Fishrider parts (I'd suggest arrow keys to move/aim, Z to jump for Contra and charge/spit fire for Fishrider, X to shoot for Contra and and throw hammer for Fishrider, C to throw axe in Contra, and maybe Space for bionic arm?), but other parts won't be as easy. The fish-feeding section in the Parachute-Man level will need additional instruction and will need to be elaborated upon to become a full-fledged minigame. As for the Mega Man boss level, the difficulty itself will make it hard to pull off. Furthermore, every level in the game will need its own instructions, which frankly just aren't worth wording if it's going to be as short as planned. Maybe for the Mega Man boss, there could be a button timed, Stabika-like sequence, and for level size, maybe you could combine each level of IDIR with concepts from IDIR 2 in order to elongate them. No matter what, it's going to take a good amount of work, but an IDIR game could be outstanding if you can pull it off.
P.S. If you don't know what Stabika is, it's a game/animation hybrid you can find here on Newgrounds, just type it in the Search bar.
Ninjaofthenight
Hey, you might want to repost this, but check the "Front Page" box before posting, so it shows up on the stream on the left of the front page. Hope you have some success making the game. It would be crazy complicated, but amazing if done right. GL