Highway to Bell Stack & Collect™

Highway to Bell Stack & Collect™ is a video slot developed by Novomatic's Greentube division, featuring a configuration of 5 reels and 3 rows with 20 fixed paylines. The "Hell-Rock" theme is highlighted, where symbols of fiery balls, large bells, microphones, amplifiers, and a gallery of larger-than-life characters create the atmosphere of a fiery rock concert in hell. The main gameplay includes two collection mechanics in the base game: the bell collection activates when fireballs appear next to the Bell Collector, while the mysterious bell collection is a random trigger that occurs when fireballs appear without the Bell Collector.

A Stack & Collect™ bonus round is also present, triggered by the appearance of three scatter microphone symbols on reels 1, 3, and 5. Players start this bonus with three free spins, and each time a new fireball or incrementor symbol appears, the free spins reset to three. Incrementors increase the value of all visible fireballs before turning into fireballs themselves, contributing to accumulating collections on the reels.

When one of the reels is completely filled with fireballs, the bell above that reel collects their values and applies a multiplier of up to 3×. Each reel can be collected up to three times during the bonus round before locking, and this reel locking progression pushes the player towards the Grand Prix. In certain licenses, a bonus buy option is available, allowing players to access the Stack & Collect bonus directly without waiting for the scatters. Optional betting features, such as bonus betting and inferno betting, are also offered to increase the frequency of bonus triggers or enhance fireball rewards during gameplay.

You can play it for real money.