Immortal Defense, a story-based tower defense strategy game, is now available at whatever price you’d like to pay for it (with a minimum of $1.75 to cover fees).

It’s no sale and not time-limited, they are doing this to see if this is how they will price all of their games.  If it doesn’t work out though, the game and future titles will revert to a fixed price point.

It’s an interesting business model that has worked in the past for some other software and games.

You can find the game here: http://studioeres.com/immortal