Upgrade Fever is an impressive 40-line classic style-themed slot that was designed and developed by Games Inc in January 2019. Bet per spin range from just 0.2 coins right up to 100 coins. It has a free spins game feature, wilds (or substitute symbols), the scatters. Slot has RTP 96.36%, and you can’t complain about that. You can, of course, also play on Android and iPhone, or any mobile device you feel like.
I would recommend this slot to anyone who likes to play a good game regardless of its main theme. Try the demo version of Upgrade Fever slot at The FreeSlots99 free. Next, play real money slots in one of the best online casinos.
