Might I suggest that the Dev makes it clear in the overview, that you can't use a mouse or touchpad to play this game. To save people the trouble of downloading a game that they won't want to play. Some of us hate having to use the arrow keys to play games. If I'd known that in advance, I wouldn't have bothered trying at all.
I'm not saying that the game is bad or anything like that. Just that some advance warning would be helpful to players, and eliminate most of the potential for that kind of criticism.