Mappy Kids/Stage 3

Main stage
''Note: In two-player mode, this stage is called "Stage 2B", as it is one of two choices for the second stage (the other being Stage 2, which is "Stage 2A").

Once Happy has dropped down onto a cloud (and Rappy with him in two-player mode), you shall come to two boxes; once you have kicked both of them to open them, two crystals will emerge from them. You will now have to jump over to the third step of a four-step platform (which has a crab walking back and forth on it) - and once you have kicked the crab away, you will come to two more boxes. Once you have kicked both of them to open them, two rings will emerge from them; you will then have to jump onto another cloud, and drop down onto a third one as you come to three more boxes. Once you have kicked each of these to open them, three more rings will emerge from them; you'll now have to drop down onto a bridge, and walk back to the left as you come to an eighth box. Once you've kicked it to open it a rollerskate will emerge from it - and once you've turned back to the right, a butterfly shall come flying towards you. Once you've jumped up and kicked him away, you'll have to jump onto a block, then jump over to a four-block platform while slowing your descent to collect ten coins; once you have landed, you shall have to time a jump past a Pac-Land-style geyser onto a fourth cloud as you come to three more boxes. Once you have kicked each of them to open them, three more crystals will emerge from them - and you will then have to jump onto a three-block platform and time a jump past another geyser onto a two-block platform. You will now have to jump over to another four-block platform while slowing your descent to collect six more coins; once you have landed, you will have to jump onto a second bridge, which has another crab walking back and forth on it. Once you have kicked the crab away you will have to jump up and kick the second, fourth and fifth blocks in a five-block stack to destroy them - and once you have done so, you shall have to jump onto a single block on a third bridge. You will then have to jump back to the left and kick the first block in the five-block stack to destroy it; once you've done so you will have to drop down onto the third block in the stack, then jump up and kick a twelfth box to open it (because once you have done so, another rollerskate shall emerge from it). You will then have to jump back to the left onto a fifth cloud as you come to three more boxes - and once you have kicked each of them to open them, three more rings will emerge from them. You will then have to retrace your steps back down to the third bridge as you come up to a third crab who's walking back and forth; once you have kicked him away, another butterfly shall come flying towards you. Once you've jumped up and kicked him away, you will have to drop down onto a lily pad, then jump up and kick the first and second blocks in a third four-block platform to destroy them, as a P-Shirt will emerge from the second one once you've done so - and Happy or Rappy will also start flashing at this point to indicate their invulnerability. Before the P-Shirt's effect wears off, you will have to jump onto what is left of the four-block platform, time a jump past a third geyser onto a fourth bridge, jump up and kick the first four blocks in a second five-block stack to destroy them; once you've done so, you'll have to jump over the fifth block in the stack as you come to a fourth crab who is walking back and forth. Once you've kicked the crab away a third butterfly shall come flying towards you - and once you have jumped up and kicked him away, you will have to jump over to a fourth four-block platform while slowing your descent as you come up to a sixteenth box. Once you have kicked it to open it, a ninth ring will emerge from it; you'll then have to drop down onto the head of a frog as he swims to the right and jump onto the first step of a two-step platform as you come to a fifth crab who's walking back and forth. Once you've kicked the crab away you'll have to jump back to the left onto another two-block platform and a sixth cloud in turn, as you come up to two more boxes - and once you kick both of these to open them, a sixth crystal and a tenth ring shall emerge from them. You must then jump back to the right over to a fifth bridge, while slowing your descent to avoid gobs of water spat towards you by a fish; once you've landed, you will have to jump over to a sixth bridge while slowing your decent to avoid gobs of water spat towards you by another fish. You will now have to time a jump past a fourth geyser onto a fifth four-block platform, then jump up and kick the first and second blocks in a sixth four-block platform to destroy them (because once you have done so, a Life Heart will emerge from the second one) - and once you have landed on what remains of the sixth four-block platform, you will have to jump onto a seventh four-block platform and the left side of a one-step platform with a mousehole in it in turn (but you shouldn't enter this mousehole yet). Once you've jumped over the mousehole, you will have to time a jump, the first of two, past a fifth geyser while slowing your descent to land on the third step of another four-step platform as you come to three more boxes; once you've kicked each of these to open them, three more crystals will emerge from them. You will then have to drop down onto the second step of the platform as you come to two more boxes - and once you have kicked both of these to open them, an eleventh ring and a tenth crystal will emerge from them. You will now have to jump back up to the platform's third step and its fourth step in turn as you come to two last boxes; once you have kicked both of them to open them, an eleventh crystal and a twelfth ring will emerge from them. You shall then have to time another jump back over the fifth geyser to land on the one-step platform's right side - and once either mouse enters the mousehole, the game goes to the slot machine.

Slot machine
The slot machine is much the same as it was on the previous stages (including Nyamco's dialogue), but spinning a skull on it can still cost you a house part if you had won one in a question box, or had bought one or more from the shop (in addition to the initial penalty of losing 20000 Yen, which is also the penalty for losing a bonus game); once you spin an item that is not a skull in one-player mode (after the possibility of spinning one more than once, which if done enough times may end up losing you all the Yen you collected) and Nyamco has described it, he shall speak the following Hiragana text:

げーむ は.... (Gēmu ha....) まちがいさがし げーむ にゃん (Machigai-sa ga shigēmunyan) ミューミューが とくいだにゃあ (Myūmyū ga toku ida nya a)

In Zynk Oxhyde's English translation, the above text gets translated to "I think Mew-mew is good at photo game." ("Mew-mew" being the happy-looking Mewky whose head is displayed on a red background); once you've pushed to continue the images on the slot machine's reels shall change to the three anthropomorphised Mewkies' heads (remember that the "normal"-looking Mewky whose head is depicted on a green background is Mewta, while the sinister-looking one whose head is shown on a blue background is Mewchi), as Nyamco begins telling you who your opponent is going to be. Once you spin the head of a specific Mewky, Nyamco shall finish saying that this Mewky will be your opponent - and once you have pressed to continue the game will proceed to the "Spot the Difference" bonus game (which is the same as it is for two-player mode, but the second player's blue hand gets moved by the CPU). However, once Nyamco finishes describing the item you spun in two-player mode, he'll speak the following Hiragana text instead:

つぎの... (Tsugi no...) はたあげ げーむ に (Hata age-gēmu ni) かったほうに あげるにゃあ (Katta hō ni ageru nya a)

In the English translation, the above text is translated to "Next flag bonus game!"; once you push to continue, the game will proceed to the "Flags" bonus game (which is the same as it is in one-player mode, but the players compete against each other to do what Nyamco says instead of a Mewky).

Spot the Difference (1P)
As mentioned above, this bonus game is much the same as it was in two-player mode, only when the second player's blue hand appears on the second picture, it gets moved by the CPU; once you have found five differences before the Mewky whose head you spun does, Nyamco shall hail Happy as the winner, and give him the prize that you'd spun on the slot machine earlier. Once you have pressed to continue, the game shall proceed to the shop.

Flags (2P)
Also as mentioned above, this bonus game is much the same as it was in one-player mode, only the players are competing against each other to follow Nyamco's commands instead of a Mewky; once Nyamco has spoken one of his eight Hiragana/Kanji commands, both players must try to follow it. If the first player (Happy) follows Nyamco's command, but the second player (Rappy) doesn't, Happy will cheer, as a small picture of Nyamco's head appears to his left and Nyamco speaks the Katakana/Hiragana text Happī no kachī (ハッピーのかちー) as Rappy cries - but if Rappy follows Nyamco's command and Happy does not, Rappy will cheer as a small picture of Nyamco's head appears to his right and Nyamco speaks the Katakana/Hiragana text Rappī no kachī (ラッピーのかちー) and Happy cries. However, if both players follow Nyamco's command, Nyamco speaks the Hiragana text Madajonokuchida nya (まだ じょのくちだ にゃ) and gives a new command; once either mouse has beaten the other one twice, Nyamco will hail him as the winner and give him the prize that you had spun on the slot machine earlier. Once you've pushed to continue, the game will proceed to the shop for a second time.

Shop
The shop is much the same as it was in the previous stages (including the elephant's dialogue); however, if you spun a skull on the slot machine in one-player mode earlier (and you did not win it back in a question box), the price for the part you lost shall have been returned to the wall. Once you (or both players in two-player mode) finish shopping, the screen will cut to the shot of the anthropomorphised Happy (and Rappy in two-player mode), looking at the pictures of their partially-built houses - and, once the game returns to the overworld map, you'll have to press right on the D-Pad in one-player mode for Happy to proceed to Stage 4, or push either up or right on the D-Pad in two-player mode for him and Rappy to proceed to "Stage 3B" or "Stage 3C".