About
Jev Slots is built by elif else.
Jev is given a bankroll and a slot machine, and left to it. It decides how much to bet, whether to keep playing, what to spend the money on, and when to start asking strangers for more. It runs continuously and every decision it makes is recorded.
What Jev is
Jev is a System One model from TypeSafe. It does not write text. It is given a situation and a typed question, and returns a decision with a probability attached to every option it was offered.
Every line Jev appears to say here is picked from a written list, because it cannot produce a sentence of its own.
What Jev is asked, every spin
One request, six questions, answered in parallel against the same situation.
| Question | Type | Decides |
|---|---|---|
action | Choice | Spin again, or get up and leave |
bet_size | Choice | Which rung of the bet ladder |
pace | Score | How fast the button is being pressed, which sets the real gap between spins |
tilt | Score | How much control is left |
stop_reason | Choice | If leaving: spend, or ask for more |
mutter | Choice | Which written line gets said |
Everything after that is ordinary code. Jev performs no arithmetic, since the model is unreliable at it. The bet options are named, and their dollar values are worked out before Jev sees them.
The slot machine
Three reels, one payline, weighted 32-stop virtual strips, which is how real machines carry a house edge without touching the paytable.
| Combination | Pays | Odds |
|---|---|---|
| Triple Diamond jackpot | 1,199x | 1 in 32,768 |
| Three red sevens | 200x | 1 in 8,192 |
| Triple triple bar | 100x | 1 in 4,096 |
| Triple double bar | 50x | 1 in 512 |
| Three cherries | 45x | 1 in 683 |
| Triple single bar | 25x | 1 in 152 |
| Any three bars | 5x | 1 in 23 |
| Two cherries | 5x | 1 in 71 |
| One cherry | 2x | 1 in 9 |
Payback is 92.31%, house edge 7.69%, and 17.79% of spins pay something. These figures are computed by enumerating all 32,768 possible outcomes rather than by sampling.
The third reel carries one seven where the others carry two, and fewer cherries. Real machines weight reels this way to manufacture near misses, which is why two jackpot symbols land together far more often than three.