Start by seeing three separate lines
FaChai is often shortened to FC in Chinese-speaking markets. Its catalogue splits into four families: slots, fishing, arcade (including the well-known coin dozers) and table games. The first three make up the bulk of what this site covers, and they're where the mechanics differ most.
The cost of lumping them together is that you reach for the wrong manual. Slot habits ("spin a few more times and free spins will come") transfer almost entirely wrong to a fishing game, because fishing doesn't run on spins at all. A coin dozer looks the most like a physical arcade cabinet, yet it doesn't settle exactly like real physical pushing. Here's each one, one at a time.
Slots: RNG paylines, input doesn't move the expectation
FaChai slots work the way the wider industry does: every spin is an independent random event, the grid is decided by a random number generator (RNG), and payouts settle on payline or ways rules. When you press spin, how long you wait, how fast you tap — none of it changes the expected value of that spin.
The only variables you truly control on a slot are bet size and how many rounds you play — not "feel," not "rhythm."
Most FaChai slots we cover sit around the 96% theoretical RTP band (96.5% is common); the in-game display at your operator is authoritative, and some titles let operators configure multiple RTP tiers. For how free spins and multipliers shape volatility, see Free Spins and Multipliers: Where FaChai Slots Hide Their Payout Potential.
Fishing: player input is written into the result
Fishing is FaChai's most recognisable line. Its most fundamental difference from a slot is that your input is part of the result. The cannon multiplier you pick, which fish you aim at, when you fire a special weapon — all of it shapes the actual return of that session.
Because return is co-decided by strategy, a fishing game has no single fixed line-based RTP to quote — it's closer to a long-run statistical band. Operators usually publish an overall return level (the FC fishing titles we cover mostly carry a 97% figure), and your own hour depends on how you play. For the full breakdown, see How Fishing Odds and RTP Actually Work.
"Fishing RTP is higher, so it's easier to win" is a double misread: first, RTP is a long-run statistic, not tonight; second, actual fishing return is multiplied by your skill and cannon choice.
Arcade dozers: drop logic plus an RNG backstop
The best-known titles in FaChai's arcade line are coin dozers (Coin Dozer) such as Fa Chai Dozer, Circus Dozer and Money Tree Dozer. The play is intuitive: drop coins to push the coins and prizes on the table forward, and whatever falls off the edge is yours. It looks the most like a physical arcade machine, but the online version settles through programmatic drop logic plus RNG — not a pure physics simulation.
The dozers we cover mostly carry a 97% theoretical RTP. The pace is relaxed and the per-round decisions are few, which makes it a low-cognitive-load category, but the long-run expectation is still negative. For drop logic and the "almost fell" trap, see Coin Dozer Mechanics Explained.
The three lines side by side
| Dimension | Slots | Fishing | Arcade dozer |
|---|---|---|---|
| Who decides the result | RNG (independent per spin) | RNG + player input | Drop logic + RNG |
| Does input affect return | No (only bet / rounds) | Yes (cannon, aim, timing) | Limited (drop timing) |
| Fixed line-based RTP | Yes (mostly 96%–96.5% band) | No, overall band (mostly 97%) | Overall figure (mostly 97%) |
| Typical rhythm | Round-based, fast or slow | Continuous, eyes on screen | Relaxed, few decisions |
RTP figures above are the common quoting bases we compiled from FaChai's public data — not promised values. The in-game display is authoritative; where a figure isn't officially published, we don't invent one.