Rom Hacks

See also Tools.

NES

Seed+speed mod

This patch supersedes the Seed mod and Speed display mod described below, providing the features of both with a slightly more polished UI and adding an ULT speed that is slightly faster than HI speed.

Seed mod

This is a patch that can be applied to the Dr. Mario ROM. It lets you choose a seed when playing in single-player mode, and shows the seed while playing. To set the seed, press "down" from the music selection to activate the seed selection. Left and right adjust a single digit at a time; select advances through the digits.

Level cap mod

This patch removes the level-24 cap, letting you play later levels. They are still clones of level 20, of course, but at least you get to count how high you've wrecked the game!

Speed display mod

This patch shows the combined speed instead of only the coarse speed (as described in Gravity).

SNES RNG mod

This patch modifies the random number generator to use the SNES version's RNG instead. The level generation and pill generation algorithms are not modified, but their source of randomness is improved.

SNES

Statistics mod

This patch adds an in-game timer, and breaks time spent down into five categories. The categories are labeled T for Throw, which increments as the pill is animated entering the bottle; D for Drop, which increments while the player is controlling the pill; L for Land, which increments while the pill displays a locking animation at the end of the player control phase; C for Clear, which increments as viruses and capsules are animated disappearing from the board, and F for Fall, which increments while leftover capsule fragments descend the bottle.