Sixbulb
About
Sixbulb is a free arcade trivia game at sixbulb.com. A round is six questions and three lives. You can play in the browser, or add it to a phone home screen so it opens like an app.
The name
Six is the length of a round. The bulb is the light on a theater marquee, which is the look of the cabinet. Sixbulb is not a company, and it is not an official xAI or Grok product.
How a round works
Pick a category and a difficulty, then start. Timed rounds give more points for a fast answer and for a streak. Chill mode turns the clock off and does not post to the board. Three wrong answers, or three timeouts, end the round.
You can also challenge one friend. Both of you pick a name, answer the same six questions, and their score stays hidden until you have both finished. A second match waits until that one is done. It does not use a Google or X account.
The categories are Science, History, Places, Arts, Nature, Sports, Screen, and Kitchen. Questions are written and checked ahead of time. Nothing is generated while you play. They can still be wrong, incomplete, or out of date. Sports questions use rules and settled events, not this season's table.
The board
A timed score can be posted with a nickname. That nickname and score are visible to anyone playing. The game itself does not need an account.
Who runs it
Sixbulb is run by the person who owns sixbulb.com. There is no public email. Use the contact page. Do not send passwords or payment details.