So rather focused on my current company for anything to be fleshed out past the hand waving stage. Here are two that I would like to tackle but don't have the resources for. Both games which are not my field but which my daydream is to setup a small indie games company for when I one day do an exit and have some money...

First one is along the lines of a tower defence but instead of attackers you have a crowd wanting to protest. The 'people' are quite good sim's in that they should behave according to research - lots of people crammed in are more violent than a widely spaced crowd. You, the player, will get different scenarios - protecting a visiting dignitary, policing a conference centre, a town square etc. etc. an obviously your level ups will be increasingly heavy duty riot control equipment: vans, water hoses, helicopters etc.

Second one was a sandbox type game like minecraft or dwarf fortress with the addition of seriously mega threats. For example a dragon living in an area that cannot be defeated without either building and planning serious defences (over a period of days or weeks) or massive co-operation. Games are either too formulaic or immediate - but there are lots of people prepared to work on long term construction projects in these kind of games, would be interesting to tap into that.

I still think execution is 90% of the battle with an idea and I am going to have a crack at both of these given half a chance. Don't think either of them are million sellers but far too many games are clones of one another and it's good to introduce new concepts