Io

Io by ELK Studios is a casino slot with a space and planetary theme, set around Jupiter’s moon Io. The game uses gravity mechanics, where symbols slide left and right as they fall, creating more winning combinations during play. The format expands with wins, adding rows up to 8 and offering up to 262,144 ways to win. The stated RTP is 96.0% and the volatility is medium-high.

The slot includes several special symbols. The Laser clears symbols in the direction it points, and crossing Laser beams can turn symbols into wilds. Wild Forge creates multiplier wilds in empty spaces below, with the multiplier increasing when it helps produce a win. Charged Wild symbols carry four extra lives, losing one each time they contribute to a win.

A free drops bonus game awards 7 free drops and is played with 8 rows. During this bonus round, Charged Wilds and Wild Forge symbols are collected at the bottom between drops, and the feature can be retriggered. A demo version is available, allowing players to play for free and practice before playing for real money.