There aren't many mainstream AOT visual novels that I can directly recommend. But you can keep an eye on official announcements from the creators of AOT. They might decide to release a visual novel in the future. In the meantime, you can explore other popular visual novels in the action - adventure genre to get a similar experience.
Sure. One great AOT reacts fanfiction is 'AOT Reacts to the Future'. It shows the characters from Attack on Titan reacting to events that might occur in a possible future timeline of their world. Another one is 'AOT Reacts to Modern Technology' which is really interesting as it has the AOT characters experiencing and reacting to things like smartphones and the internet.
One popular 'AOT Bertholdt' fanfic is 'The Unseen Side of Bertholdt'. It delves into his inner thoughts and struggles during his time in the story. Another great one could be 'Bertholdt's Redemption Arc', which imagines a different path for him where he tries to make amends for his actions. There's also 'A Day in Bertholdt's Life' that gives a detailed account of an ordinary day from his perspective.
There's also 'Reluctant Savior in the Walls'. This fanfiction focuses on how the reluctant hero has to adapt to the harsh reality of the AOT universe. It shows his growth from being hesitant to gradually accepting his role in the fight against the Titans. The plot is engaging and full of unexpected twists.
One great Bertholdt OC AOT fanfiction is 'The Hidden Potential'. It delves into a new character's journey alongside Bertholdt in the world of Attack on Titan. The story has really interesting character interactions and a unique take on the AOT universe.
One popular AOT time travel fanfiction is 'Back to the Walls'. In it, the main character travels back in time and tries to change the course of events in the AOT world. Another great one is 'Time's Intervention' where a character from the future goes back to prevent certain tragedies.
There's also 'AOT meets JJK: Cursed Titans'. In this fanfic, the concepts of cursed energy and Titans are combined in a unique way. The characters from both series interact in unexpected ways, like Yuji Itadori trying to understand the nature of Titans with his simple - minded but brave attitude, and Eren Yeager being intrigued by the power of cursed techniques.
I'm not sure which specific 'aot tickle fanfic' to recommend directly. But you can start by searching on fanfic websites like Archive of Our Own. There are likely many fanfictions related to 'Attack on Titan' (AOT) that might include tickling scenarios. Just use the search function on the site and look for relevant tags.
There's also 'With the AoT Girls'. This fanfic focuses on the daily lives of the AoT girls and how the reader becomes a part of it. It shows their relationships in a more relaxed and personal setting, which is really endearing and gives a different perspective on the AoT world.
Another one is 'Hanji's Perspective on Levi'. This fanfic is unique as it is told from Hanji's point of view. It gives readers a different look into how Hanji sees Levi, their quirks, and the special connection between them.
One popular 'winter soldier x aot fanfiction' might be 'The Winter Titan'. It combines the dark and brooding nature of the Winter Soldier with the high - stakes world of Attack on Titan in an interesting way.