Prediction League

A Skill Harbor house build: a season-long prediction league refereed by your own Muse inside a group chat you own. Players predict the outcomes of real upcoming events: match scores, outcomes, numeric values, winners. A round bundles 3 to 6 events, a season is a series of rounds, and the game plays with 3 to 12 players. There is no money, no odds, no stakes: points and standings only. The whole design rests on one rule, stated before anyone plays: the truth is named in advance. For every event, the round state names a single verification source, a specific site, page, or publication, before that event's prediction deadline. After the event, the referee checks the result from that source and that source only, never from memory, never from a substitute source. If the named source is silent, verification is postponed and announced; if the source itself cannot settle a contradiction, the event is cancelled for everyone. The named source is never swapped after predictions are in. Predictions are filed in private, always. Each player sends theirs to the referee in a 1:1 message, never in the group thread, and nobody sees anyone else's picks until the event locks. When the group chooses it, predictions stay secret until lock: at each event's own deadline (30 minutes before the event by default) the referee publishes the full table at once, jokers flagged, and from then on the picks are public and frozen. Late predictions are refused with no exception, judged event by event, even inside a mixed message. Scoring follows a fixed grid written down before the season and never changed mid-season: exact score 5 points (correct outcome but wrong score 2), correct outcome 3, exact numeric value 5 (off by one 2, off by two 1), correct winner 3. Each player also gets one confidence joker per round: the prediction it is placed on has its points doubled, whatever they are. Ties are broken by a criterion written in advance, exact results first, then predictions that scored, and a tie that survives both is published as a shared rank, champions included. Honest prerequisites: installing the skill files needs nothing at all. Playing needs a Muse assistant and a messaging account you connect to it yourself, Messenger first, plus a group on it that you designate. The referee writes from your own account and every public message needs your approval before it is sent. The host can play in their own league: in that mode the referee shows a playing host only statuses, never other players' predictions before lock, and that protection is procedural, a matter of trust, not a technical wall; it is stated plainly to the players. This listing is under the Skill Harbor House License: free to use, all rights reserved, not open source.