Developer 
Features Thử Thách của Phượng Hoàng by Jili Games is a phoenix-themed slot built around a rebirth narrative, where the bird undergoes nirvana every 500 years. The game uses a cascading mechanic that keeps winning symbols in place, removes non-winning symbols, and drops new ones into the grid. As wins build up, the board can expand from 729 to 4096 and then to 15625 Ways.
The free game feature adds a symbol-upgrade element at the end of each round. One winning symbol is chosen at random and promoted to a higher-value symbol, with a further chance to remove winning symbols again. This creates repeated win opportunities within the same round and links directly to the phoenix rebirth theme.
This demo version is available to play for free, allowing users to practice before playing for real money. The review page highlights the slot’s core mechanics, including symbol retention, board expansion, and bonus-style progression during free games.
