I think the question mark icon that tells members how to play is a great idea.
I have played about making different games for members to play and finding a way to communicate the rules and how to has always been an issue. (the question mark wouldn't solve this since the games I make to play are physical custom games, just the trying to make the point that every game has rules and members need to understand how to play them)
Even simple games need some kind of explanation for how it works, take spin the wheel for example, its simple enough that members can understand tipping will spin a wheel and maybe win a prize, but the useful information that they would be missing in that case would be the win chance % and prize list, maybe the result of the last x amount of spins
Looking at the screenshot I would probably add a label onto the prize, it feels kind of random to just have doggy and a timer at the top of the board without any indication of what it is. I assume the tile that gets fired on is random? or is there a way for the member to select the tile?
From the layout of the board I would assume that x number of spots have a prize, but that theory wouldn't tie in with having a goal at the top of the board which feels more like it's a fill the board before the time runs out.
side note: if it's not x number of tiles have a prize under that sounds like it could be a fun game. have a single color tile moving over the board in a randomized pattern and have it flip the tile its on when the member tips. Using that mechanic you could even turn it into more of a skill based game rather than luck by showing the prize tiles and having the tile movement speed up with each prize won.