It will be fun if you like the game, but if the required game is something that we dont like at all then it cant be fun.
I prefer to try the Stake vs Eddie challenge because it is all about slot game that I like, but of course I research about the slot first.
To check how the slot works, the RTP, and the chance of hitting the target.
The last Stake vs Eddie challenge I won was 2 weeks ago when the target was 250x on one of Pragmatic games (forget the name), and the reward was $88.