Tinkle Pit/World 4

Stage 17
This stage contains four Pookas (from Dig Dug, 1982), three Moonils, and one Clipper (but only four of them are present for the start); the Clippers can also cut the lines between you and your Tinker Balls, in which case the Tinker Balls shall speak the text "Pick me up, 1/2P!" and you shall have to walk back over to them. It is also worth noting that the Bonus Character for this stage is an 800-point Galaxian Flagship - which has previously appeared on Galaxian (1979), Pac-Man (1980), Galaga (1981), Gorf (Midway Games, 1981), Dig Dug, Super Pac-Man (1982), Pac-Man Plus (Bally Midway, 1982), Pac & Pal (1983), Professor Pac-Man (Bally Midway, 1983), Pac-Land (1984), Super Xevious (in silver form, 1984), Genpei Tōma Den (in white, black and pink form, 1986) and Pac-Mania (in normal and dark forms, 1987) - but it was also originally intended to appear in Pistol Daimyo no Bōken (1990).

Stage 18
This stage contains three Fygars (also from Dig Dug), two Moonils, one Stinger and two Clippers (but only four of them are present at the start); it is also worth noting that the Bonus Character for it is the 1000-point Nyamco (or "Goro") who previously appeared in Mappy (1983) and Hopping Mappy (1986).

Stage 19
This stage contains five Heitai (from Toy Pop, 1986), two Moonils, and two Timbots (but only four of them are present at the start); the Timbots can also fire lasers from their eyes at you which can pass through walls and cover one entire row or column of the screen), as well as rise up into the air to avoid the Tinker Balls. It is also worth noting that the Bonus Character for this stage is a 2000-point Taitorian - who has previously appeared on Motos (1985).

Stage 20
This stage contains two Pookas, three Moonils and one Timbot; it is also worth noting that the Bonus Character for this is a 3000-point Bell, which has previously appeared on Pac-Man, Super Pac-Man, and Pac-Mania (and, for the last of these three games, it appeared in both normal and dark forms).

Stage 21
This stage contains six Fygars, one Clipper, one Stinger, and two Timbots (but only six of them are present for the start); it is also worth noting that the Bonus Character for it is a 4000-point Mirror, which has previously appeared in Libble Rabble (1983). Libble and Rabble themselves may later appear.

Stage 22
This stage contains one Pooka, three Moonils, and two Timbots; it is also worth noting that the Bonus Character for this is a 5000-point Key, which has previously appeared on Pac-Man, Super Pac-Man, Pac & Pal, Professor Pac-Man, and Pac-Mania (in normal and dark forms). Once you have cleared this stage, you will proceed to Vs. Boss - which will see you facing off against the Moonil-operated Naka-G1 backed up by an infinite amount of Heitai.