
However, certain things being absent and the much easier difficulty might come as an unfortunate drawback for some. 1 is still a well-designed game at it's core. The Bowser fights are reskinned Bowser Statues, the 'looping' effect in the later castles is absent, no longer fireball chains, and the Warp Zone sadly defaults to the highest possible World choice rather than letting you select some previous worlds. Really the biggest thing holding it back are some limitations from the time when ASM hacking was a lot less common for Mario World ROM hacks.

The visual variety feels a lot more plentiful here. I personally found it the nicest looking of all the facelifts that All-Stars received and it gives it a more visually unique identity than just re-using the Bros. It's broken to bits in terms of balancing, but a fun reward for clearing the original 8 Worlds and feels like it better warrants the use of World as a base (instead of limiting the player to just the mechanics/features Bros. The new Worlds are a pretty neat novelty as well utilizing elements from World, so you can do some pretty fun cheatsy stuff you couldn't do in Bros. I had no idea until semi-recently that Pac even went through the trouble of recreating the Minus World glitch! It's a really rad attention to detail. No real big changes level layout wise and everything is laid out exactly like the original. The levels are pretty faithfully re-created. 1 makes for something that I found a lot more fun to play than the original. World has my favorite control scheme of the 2D Mario games, and having that applied to Bros.

That's changed a bit, but still think this hack is a fun experience and the best 'Bros.

Have a lot of nostalgia for this hack, and it still holds up pretty well! Back when I was a wee lad with just ZSNES (and back when it was still socially acceptable to use this emulator), this was my favorite way to play through Bros.
