Building shorter RPG campaigns can be a great way to provide a fun and engaging gaming experience for players without requiring a long-term commitment. Here are some tips for building shorter campaigns that can provide a satisfying experience in just a few sessions:

1. Choose a focused story. When building a shorter campaign, it’s important to choose a focused story that can be completed in a shorter period of time. Consider selecting a story that has a clear beginning, middle, and end, and that can be resolved within the 8 to 12-session timeframe.
2. Establish clear goals. At the beginning of the campaign, establish clear goals for the players to achieve. This can help provide direction and purpose and give players a sense of progress as they work towards completing the story.
3. Create interesting NPCs. Non-player characters (NPCs) can be an important part of any RPG campaign and can help provide depth and richness to the story. Create interesting NPCs that players can interact with and that can provide clues or guidance to help move the story forward.
4. Use pre-made adventures. If you don’t have the time or resources to create your own adventure, consider using pre-made adventures that are designed to be completed within a shorter timeframe. These can provide a great starting point and help ensure the story can be completed within the allotted sessions.
5. Include memorable encounters. Remember to include memorable encounters that players will enjoy and remember long after the campaign. These could include epic battles, puzzles, or unique environments that players must navigate.
6. Allow for player agency. Even in a shorter campaign, allowing players to make decisions and have agency in the story is important. This can help them feel more invested and engaged and provide a sense of ownership over the story.
7. Wrap up the story. At the end of the campaign, make sure to wrap up the story satisfactorily. Provide closure for the players, and ensure that all loose ends are tied up so that players feel a sense of accomplishment and completion.

In conclusion, building shorter campaigns for RPGs can provide players with a fun and engaging gaming experience without requiring a long-term commitment. By choosing a focused story, establishing clear goals, creating interesting NPCs, using pre-made adventures, including memorable encounters, allowing for player agency, and wrapping up the story in a satisfying way, you can create a satisfying and memorable RPG campaign.