To make it more "rewarding" for more people for longer it might be worthwhile to change the algo to reward a coin per game instead of 100 and change the time to a shorter expected blockfind time. Even then if the coin gains in popularity it will become difficult and frustrating for people at some point. That is the way it goes.
Yep, winning 0.1 coin per game is better than playing 100 games and not winning any.
However, this isn't as easy to implement as it seems.
I guess that is the same rationale behind pool mining vs solo mining.