Enter a beautiful crystal cave where you will find highly valuable gemstones that can be upgraded to stones that are even more valuable when you land them on the special Hot Spots.
Upgradium is a 5 reel slot with 3 rows and up to 25 paylines. The reels are set a beautiful crystal cave that shimmers in the light. All of the game’s symbols are related to the theme and they are different coloured and shaped crystals. There is an orange crystal, a yellow crystal, three different shades of green crystals, three different blue crystals and two purple crystals.
The wild symbol is a large red crystal with a ‘W’ engraved in it. It can substitute for all the other symbols to help and form wins.
Upgradium doesn’t have any scatter symbols.
If you land the orange crystal on a ‘Hot Spot’ (marked by a purple background) it triggers the Crystallisation Respin. All the symbols on the reels will be upgraded to the next highest paying symbol on every respin. Furthermore, reels two, three and four become ‘Hot Spots’ during the respins and landing the orange crystal again will retrigger the feature.
Whenever the wild symbol helps to form a win it will also upgrade the winning combination to the next best paying crystal.
Upgradium offers a top payout of 1,000x for landing five wild symbols along a payline. The orange crystal can payout up to 500x, the large yellow crystal can payout up to 400x and the smaller yellow and green crystal can payout up to 300x.