Alchemists Lab slot is a classic 1-line 3-reel slot machine with a bonus round. To access the bonus game, you must obtain three book symbols on the pay line. In the bonus game, you select three of the ten bottles to make your Gold. You will then win a prize amount depending on your selection of bottles. I like Alchemists Lab slot because it has a very good payout when you line up three symbols. You also win when you get one or two gold coins. The bonus round hits often and pays well for a three dollar bet slot.