Published 2026-09-15
A build is not your gear list, it is the set of rules your run plays by. REELS has 61 charms for 6 slots, offers exactly 3 at a time, weights the symbol you already have by three, and charges 40 then 80 then 160 to see another hand. Here is what each of those numbers is for, for anyone meeting the word for the first time.
If you have read anything about roguelikes in the last five years you have seen the word build used as if everyone agreed on it. Nobody explains it, because inside the genre it feels obvious. It is not obvious. It is the single idea that separates these games from the RPGs they look like, and getting it wrong is why people bounce off the genre saying it is all luck.
So here is the plain version, and then the numbers from my own game, because a definition you cannot check against something concrete is just a vibe.
In most games with gear, items give you numbers. More damage, more health, faster reload. Your character gets stronger, and the way you play stays the same.
A build is what you get when items change the rules instead of the numbers. Not "your shots do 12 percent more damage" but "your shots bounce", "you fire twice and never reload", "every third hit is free". Each one on its own is a small oddity. Two of them together sometimes multiply into something neither could do alone, and that combination is the build. You did not pick it off a list. It happened to you, and you decided to lean into it.
That is the whole appeal, and it is also why the genre insists on giving you a random offer instead of a shop with everything in it. A shop with everything is a loadout. You would pick the best three items, every run, forever, and by the fourth run you would be playing a game with one answer.
REELS is a roguelite built on a slot machine. The reels spin on their own, your weapons fire on whatever they land on, and at the end of every floor a toll comes due. When you pay it, the machine deals you charms. Charms are the rule changers.
There are 61 charms in the game. You have 6 charm slots, plus 2 separate weapon slots. So a finished run carries under a tenth of what exists. That ratio is deliberate: if you could hold a third of the pool, every run would converge on the same third.
At each toll the game offers exactly 3 charms, and you take one.
Three is not a round number picked for looks. It is the smallest offer that still contains a decision with a cost. With one card there is no choice at all, you simply accept. With two it is a coin flip between two things. With three there is a real shape to the decision: the safe continuation of what you already have, the greedy thing, and the pivot. There is a penalty in the game that takes a card away from the offer, and even under it the floor is never fewer than 2, written that way in the engine for exactly this reason. Below two, the draft stops being a decision and becomes an animation.
Pure randomness does not produce builds. It produces six unrelated effects in six slots.
So the offer is weighted. Every charm sits in one of three symbol families, the ones the machine can land on: skull, diamond, star. 28 of the 61 charms carry a family symbol, split 9 skulls, 9 diamonds, 10 stars. Whichever family you already hold the most of gets its charms weighted three times as likely to appear in your next offer.
That single multiplier is what turns a pile of items into a direction. Two skull charms in, the machine starts showing you skulls, and the run acquires a personality you did not plan at the start.
The important half is what the multiplier does not do. Non matching charms stay in the pool at full weight. You are never locked. If a run has drifted into skulls and the machine offers you something extraordinary with a star on it, you can take it and turn the whole run sideways. Three to one is a current, not a wall. A wall would mean your first two picks decide the next twenty minutes, and at that point the remaining decisions are decoration.
Rarity is weighted underneath all of that, and the weights are flat numbers in the code: common 1.0, rare 0.55, epic 0.30, legendary 0.12. There are 5 legendaries in 61 charms. Even when a legendary carries the symbol your build is stacking, the family bonus multiplies a very small number. It stays an event.
You can refuse the whole offer and ask for another three. That is a reroll, and this is where the game gets to say something about greed.
Paying a toll can overshoot. Pay more than the quota demanded and the excess becomes surplus. Surplus does not carry to the next floor. It is spent here or it is gone.
A reroll costs 40 surplus, and the price doubles every time you reroll the same offer: 40, then 80, then 160. Same hand, exponential price.
So the decision has a real shape. You overshot the toll by 120. You can look at three new charms once and keep 80 for the shop. You can look twice and keep nothing. Or you can chase the third reroll, and the machine will happily take everything you brought. Nobody is punished for stopping, and nobody is protected from continuing.
There is one more layer that makes rerolling tempting rather than mechanical. Any charm in an offer can come out in a special edition, an extra effect on top of its own: 8 percent for the gold edition, 7 percent for the jewelled one. Fifteen percent of the time, a card is worth more than the card. That is what you are actually hunting when you pay 80 to see three more.
A loadout makes you answer the question "what is the best set of items" once, correctly, and then repeat it.
A draft makes you answer "what is the best thing to do with what I have been handed" every single floor, and the answer is different every time, because the hand is different every time.
That is the entire trade. You give up control over what you get. You get, in exchange, a decision that is still interesting on your fortieth run, and a run that belongs to you because nobody else was dealt it.
You can check every number in this post yourself in about five minutes of play: three cards at the first toll, the symbol bias showing up around your second or third charm, and 40 on the first reroll button you see.
REELS is free to download with a trial, and a single purchase unlocks everything permanently. Progress you make during the trial is kept.
https://apps.apple.com/app/id6801441632