At a glance
Five steps from stake to result
Book of 99 is a five-reel, three-row video slot with ten paylines that are always active. You choose only the stake—not the number of lines.
- 01
Choose a stake
The published game range is €0.10 to €100. Once a spin starts, that stake is locked for the round.
- 02
Spin all ten lines
Regular combinations are checked consecutively from the leftmost reel. Only the highest award on each line is paid; awards on different lines add.
- 03
Read the Book wild
The Book substitutes for regular symbols in the main game. It also increments the collection rail and can trigger Free Spins when three or more land.
- 04
Check the collection
Every Book in the main game adds one step. At 99, ten Free Spins are awarded through the separate collection route.
- 05
Read the win display
The game resolves valid line combinations and updates the displayed balance. A malfunction voids affected play and awards.
The visible layout
Know where to look on every spin
The collection rail sits left of the reels. The bottom controls show stake, spin, win and balance. A 3+ Book landing starts Free Spins immediately, while every base-game Book also moves the separate counter toward 99.
VerifiedThis screenshot shows the official Book of 99 game screen from its in-game help.
Ten fixed paylines
Every line is active on every paid spin.
The diagrams are a quick visual index, not a replacement for the highlighted paths in the live game.
If two triggers happen on the same spin
If three or more Books land while the collection also reaches 99, the feature created by the landed Books plays first. The collection-awarded feature follows.
Continue to the Free Spins guide →