From the original Kaleidos description (with edits):
The game comes with 4 identical sets of 8 drawings each depicting a scene packed (to greater and lesser extents) with stuff. Each of up to four players or teams uses their own set.
Everyone looks at identical scenes and a spinner provides two possible letters for the round. One player makes the choice for all, and everyone gets sixty seconds to write down as many things beginning with that letter as they can find in the scene. Although each word can be used only once- a football and baseball wouldn’t count as two BALLS- an object can be used multiple times for different words (BASEBALL, BALL). Of course, you can adopt whatever house rules you prefer here.
Once time has expired, players read through the lists. Any object on multiple lists scores one point for those who wrote it. Any item unique to a single list scores five points. When all lists have been scored everyone advances to the next scene and a new letter is chosen. The high score after all 8 scenes wins!
Re-implements: