If you liked this
Games like Sundy Stairway
If you finished Sundy Stairway, the closest matches are Milk Outside a Bag of Milk Outside a Bag of Milk, Milk Inside a Bag of Milk Inside a Bag of Milk, Your Turn to Die: Death Game by Majority, Sound of Drop: Fall into Poison and My Friend is a Raven. All 10 share its adventure genre and are ranked by how closely their themes and modes overlap.
Milk Outside a Bag of Milk Outside a Bag of Milk
Milk Inside a Bag of Milk Inside a Bag of Milk
Your Turn to Die: Death Game by Majority
Sound of Drop: Fall into Poison
My Friend is a Raven
Saeko: Giantess Dating Sim
The Whispering Valley
The Whisperer
Take the Dream IX
