The idea behind this movie was great. But, the writers missed so many opportunities for jokes. The characters in the movie jumped into probably 25 different movie or TV types. Each one was a ripe setup for several hilarious jokes. But, most of the time, the writers punted and just played it straight or relied on sight gags (which Ritter is known for).
So, they get dropped in the Arctic and wolves attack them. Not funny. They get dropped into a cat-and-mouse cartoon and the cat chases the mouse for ten minutes. Less funny than a real cat-and-mouse cartoon.They get dropped into a "professional" wrestling match and get thrown around the ring for a bit. Not funny.
Each scene was just bursting with comic potential, but the writers never went for the home run and always played it safe and bunted for the single. By the end, I was writing the big jokes in my head.
This movie is just begging to be remade with a team of actual comedians writing the script and, bonus, playing all the bit parts.