THIS is a hybrid game combining features from Sabre Wulf and the more recent Nodes of Yesod.
Mushrooms are a prominent feature and crop up all over the place - magic mushrooms, deadly mushrooms and energy mushrooms. In fact, those fungi are most important when it comes down to finding six cannisters of a deadly chemical from the depths of a jungle maze.
You have only one hour in which to complete your mission and retrieve the chemicals - no easy task as there are a variety of mutants, gnashing teeth and star fish out to kill.
Various indescribable objects will help or hinder your task. The cassette inlay suggests shooting anything which moves. Much of the maze involves descending and ascending tunnels - here you are at your most vulnerable, falling between two narrow walls with little room to shoot the mutants. It is frustrating that you can only fire forwards and at varying angles but not up and down or behind you. That does make the game harder.
On the Run will take longer than an hour to complete at first and at the same time it is fun though unoriginal.
You have probably seen and played it all before, but if you like this type of challenge and want another variation on an Ultimate theme, then buy it.