Eliralis

and also - as soon as all opponents are destroyed, except for the main one, the essence of the game boils down to simply accumulating power in order to defeat him with numbers. This is a general problem with Heroes - the grind sometimes kills the interest in the gameplay. There are two solutions (as I see it) - either release the main, well-developed hero from the castle as soon as all other castles are captured, and give him considerable aggression (then the main task will have to be changed - to take not a castle, but to defeat the main opponent), or make it so that the troop increase is such that it is simply impossible to win by numbers.

Added 7 minutes later
0.9.8, downloaded from the first post, continues to crash.