Building fun and nerdy games I'd play with my friends.
Cut everyday objects into 2 equal halves, more difficult than it sounds! A solid object appears - a pear, a bottle, a fish, a nail - place one cut through it so that the two pieces weigh the same.
A ball is thrown, watch the start of an arc, then call where the ball lands before it gets there!
Time estimation game with no clock. You are asked for an interval - 4.3 seconds, say. You press and hold, and the screen goes dark. Let go when you think the time is up.
An irregular object sits above a fulcrum. Slide the fulcrum to the one point where the object would hold level, then let go and watch! You are guessing where the weight of the shape really lies, not where the middle is.
Counted is a daily counting game you can't count in. A scene appears - books on a shelf, a crowd of people, grapes on a bunch, stars in a sky - for just long enough to look at and never long enough to count. Then it goes dark and you say how many there were.
Estimate an angle by building it again - An angle appears on a dial for three seconds, then vanishes - and the reference line it was drawn against moves. Your job is to rebuild the angle from memory: drag the dial until it looks the same as what you saw.
Listdle