A wide variety of new indie game demos are scheduled to be available to play at gamescom 2026. If you’re interested in mysteries that leave you prying for answers and dark family secrets, there’s a game for you. ROTxBLAU announces a mystery thriller adventure Grandma(88), which is to be released on Steam later this year.

You play as the granddaughter of the titular grandma, searching for the truth behind your mysterious family history. Grandma, however, has other plans:

“Explore her memories, solve puzzles, and decide when to challenge her version of events. Every time you question her, rooms, pathways, and clues change, revealing new truths while hiding others. As you delve deeper into Grandma’s memories, it becomes increasingly clear that her inconsistencies conceal a family secret whose roots reach as far back as the Nazi era.”

With hundreds of dark secrets to hide, there’s untold amount of potential in your fight against your grandmother. Key features include:

• “Play against your own grandmother: In the game’s unique Player-vs.-Narrator mechanic, Grandma is your narrator, your opponent, and sometimes your ally. She guides you, misleads you, and constantly tries to keep you away from the truth.
• Memories shape the world: Challenge Grandma’s version of the past and watch rooms, characters, and objects appear, disappear, or take on entirely new meanings.
• Trust is your most valuable resource: Push too hard, and Grandma may become angry — or shut you out completely. Be too careful, and you’ll preserve your relationship but never uncover the truth.
• Family horror: The horror comes from intimacy, silence, and the stories families tell to preserve, soften, or suppress their past. Grandma(88) turns repression, family myths, and inherited trauma into core gameplay mechanics.
• Hand-drawn mystery thriller adventure: Featuring atmospheric pixel art, immersive sound design, psychological horror, and a nonlinear world filled with puzzles, memories, and emotionally meaningful choices.”

Watch the whole trailer below and add Grandma(88) to your Steam wishlist!