Good things come to those who wait. Such as the theme in 400 Years, a free flash game where you need to save the world and you only have 400 years. You play as a stone giant, who must make his way across Earth to save the world. he must climb cliffs, cross oceans, and bridge gaps to achieve his goal. But doing so may take a little longer than expected.

The main feature of the game is the ability to speed up time, allowing the gaint to climb cliffs by planting a tree, waiting for it to grow and then climbing the tree up the cliff. Need to cross a river? Speed up time, and wait for winter to come around and cross the ice. Oh yeah, this will take a while. While the starting amount of time may seem generous, the years soon start slipping by ever faster, and the race to save the planet may very well end in Earth’s destruction.