With five reels, a 5x3 grid, and 20 adjustable pay lines, you’ll love taking a trip through time and space with the professor and his assistant. Actually, there are coin bets for all levels of play here, with coin values ranging from 0.01 to 10 coins for a maximum bet across all 20 lines of 200 coins. Reach the maximum expansion and you trigger a free spins bonus round, where you have the full 16,807 ways throughout for the maximum winning potential.
The lower-paying symbols are diamonds, clubs, hearts, and spades. Landing 5 of the same symbol type pays 0.8X the bet. The medium-paying symbols are green glasses and a red book. Landing 5 of the same symbol type pays 1.6X the bet. The higher-paying symbols are an orange Tesla coil, a clock, the time machine, and the game logo. If you land 5 of the same symbol types, it pays between 3X to 10X the bet. The game's wild symbol consists of neon tubes displaying the word wild and during the free spins feature you can take advantage of +1 symbols. Let's find out what the features do.
The Pay Rise mechanic triggers whenever you land a winning combo, and this expands the grid with +1 extra row. You’re also awarded a respin on the expanded grid, and you can expand the grid with up to 7 rows in total by landing consecutive wins on the respins you get. This increases the number of winning ways from 243 to 16,807 at the most, and everything resets on a non-winning spin.
The Bonus Round triggers when you max out the grid with 7 rows, and this gives you 7 free spins. You get one extra spin for each +1 symbol you land during the feature, and the bonus round grid is always maxed out with 7 rows and 16,807 ways to win.