NOTE: I downloaded this game for free at one point when it was free. Since then it has raised its price to $1, with the understanding that half goes to a charity. People have raised questions about the legitimacy of this charity, but its price and this "charity offer" did not affect my review.
Okay, I know I'm not recommending this, so I anticipate downvotes, but I judge projects based on their goals. The goal of this game is to "humanise and remember" the victims. To do this, you walk from item to item, objects left behind by those who died, and examine them until a butterfly appears, leading the path to the next object. This happens perhaps six times and then the game ends with another brief cutscene. Looking at objects left behind can tell you a lot about the people who left them, but i didn't feel that way with this game. They're all very low-poly and contain no material that would teach one about the people involved, or fulfill the game's goal of humanising them. Beyond that, you walk slowly on a low-poly, two color beach. Because you are to follow a set path and theres no real reason to explore, it isn't really even interactive- there are no choices to be made. Neither is there any randomness, as in Dear Esther. So, as art, it kind of fails as well- the choice to make a small empathic project a game means that less money can be spent on the surroundings. If it were a video, (which it basically is, as there is no room for player incentive or experimentation,) the polygonal nature of the surroundings and the repetition would doom it. So, in my book, that dooms the game as well. It's only really about the victims of the tsunami because the game tells you it is, to be honest.
If you feel like feeling sad, this game might make you feel sad. That's not enough for my personal recommendation.