Energy Stars is a five-reel, three-row video slot from BF GAMES with 20 paylines. The game uses a cosmic-style presentation with star imagery and classic fruit symbols, while wins are formed by matching symbols from left to right on active paylines. The return-to-player figure listed for the title is 96.01%, with bets ranging from 0.05 to 50.
The main special symbol is a stacked Wild star, which substitutes for other symbols except Scatter and can appear in groups on the reels. The Scatter is shown as a bell and pays when three or more land, with separate awards listed in the paytable. The rules screens also note that the highest-paying combination for a symbol is the one that counts on a winning line.
In the demo version, players can play for free and study the reel setup before deciding whether to practice before playing for real money. After a win, the Gamble feature allows a choice between red and black for a chance to double the amount, while a wrong choice loses it. This makes the slot's main mechanics centered on line wins, Scatter payouts, stacked Wilds, and optional risk-based play.