Super Mario Forever/Walkthrough
Although this game may be short in terms of the length of maps, Super Mario Forever's difficulty is unforgiving. Each "area" has its own details that must be paid attention to, and even though the game is linear there are usually more than one solution to get around a problem.
The walkthrough is split up by level, and then each area where close attention to detail can be made. If a chain of areas are linked somehow due to time, they will be listed under the same section, separated into paragraphs.