Hoppscotch comes to mind. There are 2 ways to read, first is read chapters 1-56 and discard the rest. Second is follow the author's order, which is 73, 1, 2, 116, 3, 84... At the end of each chapter it says where you should jump next. Plus there's a lot of experimental stuff in it, steam of consciousness, news fragments, a chapter where the author made up his own language, fragments of a fictional writer, etc

Only thing is I don't know how well the original Spanish translates to other languages (tho according to Wikipedia the English translator won some award so should be good).