I really like this game, and I play it quite often, but I do have a few things I think you should do to make the game better.
First, I think you should allow players to make custom areas, or just add more of a variety to the areas. Maybe you could allow players to create a battlefield and place down trees, rocks, etc. OR if you added more areas with more variety, like maybe a castle gate.
Second, I think you should allow players to create custom fighters. I like the fighters in this game and there is good variety, like there’s knights, vikings, pirates, ninjas and many other things. But maybe if you allowed players to make other fighters like orcs, goblins or even just other knights and things like that.
Third, I think you should allow players to have more than two teams. Maybe if you divided the area into fourths you could let players have free for all battles or something like that.
Fourth, I think you should let players place more units on the field. The maximum is 120 right now, but maybe if you increased it to 200 or even 300, the battles would be more exciting and would last longer.
Fifth, I think upgrade prices should be lowered a bit, because it seems really excessive that you have to get like 3,000 gems to take a catapult from level 1 to 2. Maybe half the prices or make it easier to get gems.
And that’s really all I have to say. I like this game a lot but there are some minor things that I hope are added in the future.