Yggdrasil, a leading worldwide publisher of online gambling content, and Peter & Sons have unlocked the doors to the underworld in latest release Xibalba.

As the 12 demon lords of Xibalba gather, brave adventurers are greeted with an initial 5x3 reel set, with the height expanding with every winning spin.

Each successful spin also increases a win multiplier by 1x, with winning combinations being removed in the classic cascading style slot.

Wilds can also grow during the game, with them not being removed by cascades, but ensuring every symbol added to the reel above it is also a wild.

When two scatter symbols land on a single spin, the Gigantor feature is triggered. This sees a respin occur, with reels in which scatters have landed spinning in sync while displaying supersized symbols of up to 3x3 in size for massive wins.

Three or more scatters will see 15 free spins awarded, with an unlimited multiplier during cascades, without resetting every spin for huge win potential as the multiplier builds.

In certain jurisdictions, players can also buy free spins for a shortcut into extra win potential. Xibalba is the newest slot from Peter & Sons to join the YG Masters portfolio, following Monster Blox Gigablox.

Xibalba is powered by GATI, with Yggdrasil’s state-of-the-art technology enabling partners to employ the preconfigured, regulation-ready, standardised development toolkit to produce consistently cutting-edge content followed by rapid distribution.