Editing Enemy Course

Each of the first six worlds of ''[[Super Mario Bros. 3]]'' features at least one Enemy Course.  An enemy will patrol the world map, moving when the player loses a [[Extra life|life]] or clears a level, and the player must fight it if they cross paths. Depending on where they meet, the arena and any block contents may change (ex.: meeting on a water tile in [[Water Land|World 3]] will have the ground submerged underwater). If the player wins this battle, they will be rewarded with an item, such as a [[Super Star|Starman]] or [[Music Box]].  In this game, Enemy Courses consist solely of [[Hammer Bro]]thers and their variants. These courses can be skipped if the player uses a Music Box, which puts them to sleep until the player clears a level and/or loses two lives in a row.

The Hammer Bros. can travel over most of the map, moving one space at a time every time a stage is exited by completing it or failing it. They can only ever stop on the blank areas on the map resembling [[coin]]s, and will skip over any stages, [[Toad House|Mushroom House]]s, [[fortress]]es, or [[castle]]s they may walk into, consecutively as needed, though when these lead to dead ends they will simply return to where they began that turn. Also, if two overlap, they both will continue moving so they are on separate spaces. They are blocked by rocks, gates, and open drawbridges like the player is, but also cannot cross or even move onto [[Start Space]]s, [[Spade Panel]]s (including completed ones), [[Warp Pipe|pipe]]s, destroyed fortresses, the "tree" space in [[Desert Land]], or [[World 5-Tower (Super Mario Bros. 3)|the tower]] in [[Sky Land]]. They will also not move onto the space where the player starts out on that turn, such as a completed stage. If one gets "trapped" between the player and a space it cannot walk (such as a Spade Panel), it will not move that turn.

In [[Super Mario Advance 4: Super Mario Bros. 3|the Game Boy Advance version]], once [[Completion|every level is beaten]], the Enemy Courses can be replayed indefinitely, and the player is not forced to enter them, though they will also move if the player visits a [[Toad House]] or [[Spade Panel]].

{|style="text-align: center" class=wikitable

|-

|[[Grass Land]]

|A [[Hammer Bro]]ther  

|A [[Super Star|Starman]]

|-

|rowspan=3|[[Desert Land]]

|A [[Boomerang Bro]]ther

|A [[Music Box]]

|-

|A Boomerang Brother

|A [[Hammer]]

|-

|Two [[Fire Bro]]thers

|A [[Recorder|Magic Whistle]]

|-

|rowspan=2|[[Water Land]]

|Two Hammer Brothers

|A Hammer

|-

|Two Hammer Brothers

|A Starman

|-

|rowspan=3|[[Giant Land]]

|A [[Sledge Bro]]ther

|A [[Lakitu's Cloud]]

|-

|A Sledge Brother  

|A Starman

|-

|A Sledge Brother  

|A [[P-Wing]]

|-

|rowspan=3|[[Sky Land]]

|Two Hammer Brothers

|A Starman

|-

|Two Hammer Brothers

|A P-Wing

|-

|Two Hammer Brothers  

|A Music Box

|-

|rowspan=3|[[Ice Land]]

|Two Hammer Brothers

|A Hammer

|-

|Two Hammer Brothers

|A Lakitu's Cloud

|-

|Two Hammer Brothers

|A Starman

|}