Well, one popular 'Mabel Dipper Love Game Fanfic' is 'The Twin's Adventure in Love Game'. It has an interesting plot where Mabel and Dipper get involved in a mysterious love - themed game and they have to face various challenges together. It's really engaging.
I'm not sure about a specific 'Mabel Dipper Love Game Fanfic' that stands out above all others. But you could try searching on fanfic platforms like Archive of Our Own. There are likely many stories there. You can filter by tags like 'Mabel', 'Dipper', and 'Love Game' to find what you're looking for.
In this love game fanfic, it could start with Mabel, Dipper and Bil being transported into a magical world that is all about love. There could be different levels in the game. At the first level, they have to figure out each other's love languages. Mabel might be all about gift - giving, Dipper could value quality time, and Bil might be into acts of service. As they progress, they face challenges that test their relationships and they learn more about themselves and each other in the process.
I've read 'Mabel and Dipper's Unseen Journeys'. It's a really cool fanfic. It adds new elements to their story, like new mysteries they solve together that are not in the original show. It also focuses a lot on their emotional connection.
One common theme is friendship. Even though it's a love game, their strong bond as siblings and friends is often explored. Another theme is mystery, as the nature of the love game itself is usually a mystery they have to solve.
One possible plot could be that Mabel and Dipper get trapped in a strange game world created by Bill. Bill, being his mischievous self, tries to manipulate the rules of the game to turn Mabel and Dipper against each other. But their strong bond of love for each other as siblings helps them see through Bill's tricks and they start to find ways to turn the tables on him within the game. Maybe they use the power of love, which is something Bill doesn't understand, to break free from the game world and defeat Bill once and for all.
A possible plot could be that an evil entity traps Mabel, Dipper and Bil in a love game. The rules are strange and they have to find true love within the game world to escape. Mabel might start by trying to set up Dipper with a character in the game, but then realizes she has feelings for him herself. Meanwhile, Bil is trying to figure out the true nature of the game and stumbles upon some secrets that could help them all.
There's a 'Dipper x Mabel college fanfic' titled 'College Days of Dipper and Mabel'. In this fic, it focuses on how they explore different majors in college. Dipper might be into some science - related majors while Mabel could be exploring art or design. Their interactions with new friends and professors are also interesting parts of this fanfic. Well, there are also some other fanfics out there that might be less well - known but still quite engaging, like 'The College Life of the Pines Siblings' where their old Gravity Falls adventures somehow influence their college days in unexpected ways.
Well, 'Siblinghood in the Mysterious Falls' is also a great one. It shows their daily interactions in Gravity Falls. It portrays how they share secrets, protect each other from the villains of the town, and how their sibling love is a constant in the midst of all the chaos and mystery.
One popular 'dipper pines x mabel gleeful' fanfic is 'The Twin Adventures'. It has an interesting plot that takes the characters on a new journey filled with mystery and a bit of magic. Another one could be 'The Gleeful Bond' which focuses more on the emotional connection between Dipper and Mabel Gleeful in a unique way.
I'm not sure about a specific 'Mabel and Dipper kiss fanfiction' to recommend. You could try searching on popular fanfiction websites like Archive of Our Own. There might be a wide variety of stories there that include such a scenario.
A popular one is 'Dipper and Mabel's Secret Quest'. This fanfic focuses on a secret mission that only Dipper and Mabel are aware of. It delves deep into their relationship as siblings and how they support each other through tough situations.