Ikki_1.0.exe is an branched campaign for STW MI/WE. The outcome of a battle decides what comes next. Unlike a scenario for STW MI/WE, you never have to replay a battle to proceed. There's always a next battle, but the field, the army and the condition will change. There are some pretty tough battles and some are will last an hour or more. It has some new maps and is made with patch 1.02 in mind. It will work for any version of STW MI/WE though. Not compatible with original STW.
There's a but. During creating it slipped that STW MI/WE wasn't really made for this kind of scenario. It works, but it only recalls the progress properly when it's played non-stop, which is tricky considering it's big. The reason is false economy: some battles are used more than once in different branches and there are connections between branches. Human mind can see some logic, the computer can not. <a href="https://forums.totalwar.org/vb/local_links.php?catid=10&linkid=16" target="_blank">Schema for Ikki</a>.
All battles can also be installed as Historical Battles, there's a schema to help show which battle should be played after the other. Nothing stops the fun to just play in any sequence or just one.
IkkiBranches.zip
This zip contains an visual schema to play the Ikki scenario in Historical Battles mode. It's not required to play <a href="https://forums.totalwar.org/vb/local_links.php?catid=10&linkid=15" target="_blank">Ikki</a>.