Tom Clancy's Ghost Recon 2 (2004)
... (14 titles across pc and consoles)
Tom Clancy's Splinter Cell: Blacklist (2013)
Now, going from unreal engine 2 to 4 is the kind of jump that suggests your dumping most of the old code. However by sticking with version 2 that long they where clearly reusing their code between games.
https://en.wikipedia.org/wiki/List_of_Unreal_Engine_games
Unreal Engine 2 - Warfare Build 927
Now, going from unreal engine 2 to 4 is the kind of jump that suggests your dumping most of the old code. However by sticking with version 2 that long they where clearly reusing their code between games.