Sadness is not often an emotion evoked by games, but Is It Time? succeeds in doing so. It's an attempt to move into Passage territory; you play an old woman, living alone, whose husband has recently died. Your world consists of two scenes; the interior of your house and "outside," which consists of the gravestone of your husband, a winter-bare tree, and a park bench.
Your character has three stats: fatigue, hunger, and boredom, which count down from 100 to 0. If fatigue or hunger reaches 100, you pass out; at 0 boredom, your depression makes your motion slow. You can move left and right, press the down key to weep, or press space bar to interact with objects; your main interactions involve preparing food and sitting on the park bench. The whole world is in a dreary palette, alleviated only by occasional visits from your children, or memories of your husband; they are in bright, vibrant colors. At the park bench, a friend, another old lady, often appears, sits with you, and talks.
Over time, your world decays; the controls alter, text becomes less comprehensible, your vision fails. At the end of each day, you are asked "Is it time?", and if you select "yes," you die.
There are a number of hallucinations and flashbacks to unlock, and how much you interact with your friend affects her happiness -- she will, in fact, die if you never talk to her.
There's really no reason to keep on playing, except perhaps to unlock all content; but that's rather the point. There's little reason for the protagonist to go on living.
It's an affecting and depressing little game, interesting both for that reason and in the ways it metaphorizes depression and the character's failing mind and body. And there is, of course, a subtext: Call your mother!