The designer has reprogrammed the game's assembly code to allow fights beyond the engine's capabilities.

The most impressive quality of Brutal Mario though, which has earned it prestige in the hacking community, is the spectacular boss battles. And I must mention the samarai-sword speed-reaction level, in which Mario must unsheath a sword faster than his opponent. Another returns Mario to his spaceship from Super Mario Land. Another is to have Yoshi eat a certain amount and a certain type of enemy as the timer counts down. For example, one level objective is to chase an accelerating Yoshi through dangerous terrain (get back onto Yoshi to complete it - harder than it sounds!). There are many hacks that create new levels for Mario to complete, but this hack introduces new types of levels and puzzles. This redesign of Super Mario World is notable for many things. Extra Mario Bros is a tough (but fair) game, which rewards exploration with constant suprises. It is the Mario Engine, re-programmed with an arsenal of new capabilities. It is worth noting that this is NOT a hack of the Metroid Engine (as would usually be the case with hacks). Should you collect them all, the final boss changes to a huge Bowser (more impressive than it sounds, especially on the NES). The game also offers multiple endings dependent on percentage of items collected. Through exploration, Mario earns permanent upgrades such as terrain-destroying fireballs, different types of projectile, different types of boots (so Mario can walk on Lava) keys and double-jumping, allowing him to progress further.

Rather than a level-by-level system, the engine has been redesigned to be more like Metroid, with a series of linked sectors in a large world (which you can backtrack through). This redesign of Super Mario Bros is a marvel. I've created this thread to share some media for these projects. I've always been interested in the game hacking community, especially when they redesign a game to the nth degree, create a new genre with an established game, or totally convert a game to something else.

Sonic 1 megamix v4 rom