Dinky Kong

Ostensibly a Donkey Kong clone, Dinky Kong isn't a straight variant of the arcade original, instead the latter 'rivet' levels are incorporated into the first level so that you must dodge the barrels while also doubling back to ensure you've removed the rivets that make the structure unsound and will eventually lead to a win.

Removing rivets will result in barrels falling through them so it becomes a little easier to plan once you get yourself into a spot where you can better judge the direction a barrel will travel. Missing rivets, however, do provide another hazard and you must leap over the newly created holes to avoid falling to your death.