As you all but accepted El-Guest's answer, is it:

Good, Day, Dream
Night, Light, House
Game, Show, Boat
Outer, Space, Travel
Drugs, Ring, Man

But then again I can't count! Or read!

So, using the up-down rule, and the error is with ring, is it:

Good, Day, Dream
Night, Light, House
Game, Show, Boat
In, Time, Travel
Drugs, Big, Plan

As you all but accepted El-Guest's answer, is it:

Good, Day, Dream
Night, Light, House
Game, Show, Boat
Outer, Space, Travel
Drugs, Ring, Man

But then again I can't count! Or read!

So, using the up-down rule, and the error is with ring, is it:

Good, Day, Dream
Night, Light, House
Game, Show, Boat
On, Time, Travel
Drugs, Big, Plan

As you all but accepted El-Guest's answer, is it:

Good, Day, Dream
Night, Light, House
Game, Show, Boat
Outer, Space, Travel
Drugs, Ring, Man

As you all but accepted El-Guest's answer, is it:

Good, Day, Dream
Night, Light, House
Game, Show, Boat
Outer, Space, Travel
Drugs, Ring, Man

But then again I can't count! Or read!

So, using the up-down rule, and the error is with ring, is it:

Good, Day, Dream
Night, Light, House
Game, Show, Boat
In, Time, Travel
Drugs, Big, Plan