The Suiri is a mystery solving adventure game where the player tries to solve 18 different cases. Each cases consists of searching various locations for clues and then making deductions and drawing conclusions. The game is viewed from 1st-person perspective with various zoomed-in areas of interest where player can often interact with in more detail.

In this game the player controls a young girl detective that have to solve 18 cases. To solve them she will have to inspect all the cases places in search of clues, after finding all the clues she will have to make a theory and solve it, that last part is really hard to do if the player don't understand japanese since all the questions are in japanese and without answer them in the right way the player can advance to next case. The gameplay is a first person perspective with 2d cartoon graphics, when the player finds one of the clues the game makes a close up view.