Editing Spade Panel

'''Spade Panels''',<ref name="smasmanual">{{cite|language=en|publisher=Nintendo of America|date=1993|title=''Super Mario All-Stars'' instruction booklet|page=31&ndash;32}}</ref><ref name="smb3manual">{{cite|language=en|publisher=Nintendo of America|date=1990|title=''Super Mario Bros. 3'' instruction booklet|page=21}}</ref> also known as '''Flip Games'''<ref>{{cite|author=Peterson, Erik|title=''Super Mario Advance 4: Super Mario Bros. 3'' Player's Guide|date=2003|publisher=Nintendo of America|language=en-us|page=18|isbn=1930206-37-2}}</ref> or '''Spade Houses''',<ref>''Super Mario Advance 4: Super Mario Bros. 3'' Prima's Official Strategy Guide back cover</ref> are small [[panel (Super Mario Bros. 3)|panel]]s on overworld maps in ''[[Super Mario Bros. 3]]'' that can be used to earn [[Extra life|extra lives]] for [[Mario]] or [[Luigi]]. Once the player enters one, they can play a [[minigame]] hosted by a [[Toad (species)|Toad]]. Its gameplay is similar to that of a slot machine, in which parts of pictures slide past on three different reels, and the player must line up three matching parts to make a picture and win extra lives. There are [[Super Mushroom|Mushroom]], [[Fire Flower|Flower]], and [[Super Star|Star]] icons on each reel, granting two, three, and five extra lives when lined up as the '''Mushroom Picture''',<ref name="smasmanual"/><ref name="smb3manual"/> the '''Flower Picture''',<ref name="smasmanual"/><ref name="smb3manual"/> and the '''Star Picture''',<ref name="smasmanual"/><ref name="smb3manual"/> respectively, similarly to the [[Goal (Super Mario Bros. 3)|goal]] at the end of nearly every [[level]]. If any of the picture parts are mismatched, no extra lives are awarded. The player gets only one chance to play the minigame, after which the Spade Panel disappears.

In ''[[Super Mario Advance 4: Super Mario Bros. 3]]'', if a Spade Panel is matched up correctly, further Spade Panels change to '''{{conjectural|Heart Panels}}'''. The Stars are replaced by [[Super Leaf]] icons that give seven extra lives. Clearing one of these turns further Heart Panels into '''{{conjectural|Club Panels}}''', and the Super Leaves change to "3" icons that reward 10 extra lives. Clearing a Club Panel turns further panels into '''{{conjectural|Diamond Panels}}''', where only one picture can be lined up, making it impossible to lose. Earning a minimal number of lives at previous panels results in a Mushroom Picture, while higher numbers yield a random picture, and each picture gives the corresponding number of extra lives. If the player clears a Diamond Panel, or fails at any of the other ones, all panels revert to Spade Panels, restarting the process. [[Completion|Clearing all levels]] makes all Spade Panels reusable.

The delay range for the first reel (16 frames) is three frames fewer than its timing window (19 frames), meaning that for each full revolution of the reels, the player has a window of three frames to press {{button|nes|A}} to guarantee that the reel will stop on a desired picture, regardless of any added delay. However, the delay ranges for the second and third reels (32 and 64 frames, respectively) are larger than their timing windows (19 and 16 frames, respectively), meaning that the delay can potentially cause the reel to skip over the entire timing window for a certain picture; therefore, it is impossible for the player to guarantee that the second and third reels will stop on a desired picture. For the third reel, the minimum delay of 64 frames is equivalent to one full revolution of the reel, and the maximum delay of 127 frames is equivalent to two full revolutions, essentially meaning that the third reel can start slowing down anywhere on the reel and stop on any of the pictures, regardless of when the player presses {{button|nes|A}}. Thus, the outcome of the minigame cannot be determined by the player whatsoever.