Mount & Blade is a quite popular franchise in some circles. It is based around a fairly simple, but difficult to master combat system, which mixes melee, blocking, and ranged attacks. They are balanced by reload time (and sometimes accuracy) to make all methods viable. A 100 vs 100 battle, including cavalry and other special units, is quite unique. It is also a popular mod platform, although Warband's engine can be a little temperamental.
As such, there's quite a bit of interest for the upcoming Mount & Blade II: Bannerlord. The Siege game mode involves an attacking wave beating down a fortress, trying to open as many attack paths as possible, and eventually overrunning the defenders. The above video is from the defending perspective. It seems like it, mechanically, changed significantly from Warband, particularly the Napoleonic Wars DLC that I'm used to. In that mod, attackers spawn infinitely until a time limit is reached. This version apparently focuses on single-life AI armies, which Warband had as Commander Battles.
Hmm. Still no release date, though.