Free Slots
Explorer’s Library
Explorer’s Library is a free book slot: the magic book is wild and scatter, and free spins pick an expanding symbol that fills whole reels. High volatility, no download.
- 5×3
- 10 lines
- expanding-symbol free spins
- high volatility
- RTP 96.9%
- high volatility
- Max 5,000×
Explorer’s Library is a classic book slot with an adventurer’s study theme. The magic book is both wild and scatter: three or more start 10 free spins with one expanding symbol, drawn fairly from the nine regular symbols. When it lands on enough reels, it fills them and pays on every line. Wins come less often here, but they can be big.
Paytable and rules
- Matching symbols in a row from the leftmost reel on any of the 10 lines pay. The explorer, owl, globe and telescope pay from 2 in a row; the others from 3. Only the highest win on each line pays.
- The magic book is both wild and scatter: it substitutes for every symbol, and 3, 4 or 5 books anywhere pay 2×, 10× or 50× the bet and start 10 free spins.
- Before free spins start, one of the 9 regular symbols is drawn as the expanding symbol — each with the same chance (1 in 9). The book flipping on screen only shows the draw; there is nothing to choose.
- In free spins, normal wins pay first. Then, if the expanding symbol lands on enough reels to pay (2 for high symbols, 3 for the others — the reels don’t need to be next to each other; books don’t count), it fills those reels and pays on all 10 lines as that many in a row.
- 3 or more books during free spins add 10 spins with the same expanding symbol, up to 50. High volatility: wins come less often but can be large. Maximum: 5,000× the bet in one spin.
Pays (× total bet) · Bet 100
| 2 in a row | 3 in a row | 4 in a row | 5 in a row | |
|---|---|---|---|---|
 | 500.5× | 1,00010× | 5,00050× | 20,000200× |
 | 250.25× | 4004× | 2,00020× | 7,50075× |
 | 250.25× | 3003× | 1,00010× | 4,00040× |
 | 250.25× | 3003× | 1,00010× | 4,00040× |
 | — | 800.8× | 4004× | 1,50015× |
 | — | 800.8× | 4004× | 1,50015× |
 | — | 550.55× | 2502.5× | 1,00010× |
 | — | 550.55× | 2502.5× | 1,00010× |
 | — | 550.55× | 2502.5× | 1,00010× |
 | — | 3: 2002× | 4: 1,00010× | 5: 5,00050× |
Expanding symbol in free spins: N reels pay the “N in a row” amount on every line, i.e. the table value × 10.
The 10 lines
Return to player (RTP): 96.9%, measured over 20,000,000 simulated spins. Volatility: high. Maximum win: 5,000× the bet.
Results come from your browser’s secure random number generator and are decided the moment you press Spin. Animations never change the outcome.
Advanced guide
How to Play Free SlotsNew to slots? The guide starts with your first spin and how to read a paytable.
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