One method I use to think up fresh concepts/ideas in general in life is to grab a dictionary, turn to a random page and write down 2 nouns, then turn to another page and write down a verb, then randomly open the dictionary at yet another page and write down an adjective.
Then do this 10 times in a row, so that you now have around 40 words. After this cut up the paper so that each word is on a separate piece of paper. Following this turn each slip of paper upside down.
Grab a cup of tea and select randomly 2, 3 or 4 pieces of paper and mull over that concept.
Example: I just got
Laos,
wedding and
mystical . . . doesn't seem like there would be an idea in this . . . but is there? Perhaps a game character wants adventure travelling to Asia, ends up in Laos and finds a
wedding ring, then somehow begins a journey back in time to a
mystical era in which a bride disappeared on her wedding day? Perhaps he discovers he is a reincarnation of the guy who was destined to marry her as a nice twist ending?
But how did the ring trigger the character to go back in time? Okay, I will use this method again . . . This time I got
supermarket,
defuse and
build . . . not ideal, but maybe we could change the
supermarket to a pawn shop where the main character goes to pawn the ring, as maybe he is poor and down on his luck. The ring tends to glow when he holds it, but when he goes farther away from the ring
tension starts to show up in nature around him . . . birds start circling overhead, a storm gathers, dogs start barking and flying ants begin emerging from under the pavement etc . . . To
defuse the tension a tunnel in time and space opens up before him . . . and so on.
I am interested to know just why the character was down on his luck and perhaps homeless? What happened? Time to select some more random words and find out . . .
With this method I can get so many ideas. Some are duff, some okay, and the odd one turns out great.
I used to use this method to win tiebreaker slogan competitions back when I lived in the UK and won so many competitions as a result of using this.
Hope this helps