raze 2 or gemcraft chapter zero cause they're not to challenging they're not to easy and there's a load of lvls and lots of action the reason they have so many plays is cause the people who made the games put a lot of effort into the games and which makes them better not like some of those borin games when it only takes 5 minutes
Just like nichodemus and pangtongshu stated... there's already a thread made for this topic, so there's no need to create a duplicate one. Please search for an exsisting thread before making one of your own to help avoid a lot of duplicates, ok?