⿺走巳 or ⿺走己: Can 起 be written in two different ways?
These two are completely the same, they are just two different writing systems. 起 without a stroke is the simplified Chinese which is used in mainland China and Singapore while the character with a stroke is the traditional Chinese form which is mainly used in Taiwan and Hong Kong.



Above is an image from Baidu, it illustrates the different forms of this character in different countries and regions. From left to right is: China mainland, Taiwan, Hong Kong, Japan, South Korea and the old form (which appears in 康熙字典, a very comprehensive Chinese dictionary compiled in Qing Dynasty).