So for the first alternative map, I will just make the Up screen the same as the Right screen, and the Down screen the same as the Left screen. This means that there will only be the Horizontal progression through the map, and that Up/Right will be “forward” and Down/Left will be “backward” through this progression.
You can download the modded rom below:
I playtested this, and found that it works exactly as intended. The map is far simpler to navigate, and getting lost is now virtually impossible. Fly up/right to go forward, down/left to go backward, and all overworld screens appear in order. The confusing one-way vertical borders on the Phonebooth and Bridge screens are eliminated.
The downside of this is that traversing the overworld map is slower, since there are no shortcuts to be gained by using cornering techniques. You still can rapidly advance two screens in the horizontal map sequence by going diagonal from near the corner, transitioning on both the vertical and horizontal edge transitions. But compared to the original, where a vertical transition would typically advance you between three and five screens in the horizontal sequence, it’s much slower, and offers no real opportunities for useful shortcuts.
The only real shortcuts possible are via the subway system, which I left unmodified. Despite playing this game over nearly four decades, I’ve never bothered to memorize the subway in its entirety — there’s little reason to. The only exits of real importance are the ones that go to the Jail and Daily Planet. But with this map, knowing the rest of the exits is potentially more valuable, because it can get you to the other side of the overworld in less time than any other method. It may be interesting to study the exits and try to figure out alternate layouts that might make the map more interesting by providing additional useful shortcuts.
I can reliably win Superman typically in 1:30, +/- 15 seconds, but this variant took me 3:04 to win on my first play. I’m sure faster times are possible. The gangsters seemed to be bunched up more, and rounding them up preoccupied me at first, leading to the helicopter moving bridge pieces away, which I think happened earlier than normal. But because the map is essentially a two-dimensional line, finding the helicopter was trivial, making any challenge increase by the bridge pieces moving around quite minimal.
My impression is that this alternative map might have made the game more playable for very young players, ages 3-5, and as an “easy” version for beginning players, much like Superman‘s sibling Adventure offered players Game 1 with a simplified map. But overall, the simpler map makes the game less interesting and less challenging to play. But if you’re interested in the game’s design, playing this variant to see why it’s less interesting is… well, an interesting exercise. I invite you to download it and play it for yourself and make up your own mind. If you do, please drop a comment and let me know what you think.
My next Superman romhack will present the overworld map as a grid.