Source Code 
GitHub - shar0/PicoBaye: Sanguo Baye port on PicoCalc.
Sanguo Baye (三国霸业) is a history simulation game (freeware) original run in BBK (A famous electronics brand in China) Electronic Dictionary (A learning purpose small laptop, for real 
). Author is Tong Xiao Chong (通宵虫), previously worked at BBK.
You know that any electronic product initially used for learning purposes will eventually find some unintended, or “undesigned” uses, including Programmable Calculators.
This game is a memory for a generation of Chinese student.
NOTICE: It’s not a perfect runnable port, game will freeze on map screen with few keyboard clicks, if you have interesting for debug, just PR.