Upcoming Slot Releases This Week – New Online Slots (June 1 – June 7)

Horror, ice, and mythology walk into a slot lobby. It sounds like the setup to a joke, but this week's lineup is genuinely hard to summarize any other way. Different studios, different visual languages, different mechanical approaches that share nothing except a release date. 

One locks you inside a decaying asylum with a hook that rewrites the board. Another drops a multiplier-carrying dragon through a frozen lair. The last one hands the controls to a Roman goddess and lets her wheels decide everything.

Check out this week's new online slots — full details on RTP, volatility, max wins, and bonus features for every game releasing between June 1 and June 7.

Sanatorium Secrets (Pragmatic Play)

Release date: June 1

Pragmatic Play doesn't often go this dark. Sanatorium Secrets opens on a misty, wrought-iron gate with an ominous institution looming behind it; decaying stone, grey skies, barbed wire, the kind of place that looks like it was designed to keep things in rather than let people out. Spider-crawled playing card royals and four unsettling character symbols fill the reels. It sits somewhere between Silent Hill and Outlast in terms of visual tone, and it commits to that atmosphere completely.

The Hook is the symbol that makes the base game interesting. Landing on the outer reels, it drags across its row, pulling high pay symbols into wilds and doubling any multipliers it passes over. Combined with the tall wild symbols, 1x4 and 2x4 versions carrying multipliers up to 64x, a well-timed Hook sweep can restructure the entire board in one motion.

Before free spins begin, a hold-and-win Puzzle round plays out. Puzzle pieces lock onto reels 2–5, each one resetting the spin count and awarding an extra free spin. Fill a reel completely and the premium symbol above it turns wild for the entire bonus. It's a setup phase that determines how loaded the free spins round actually is before the first spin lands.

At 96.47% RTP, medium volatility and 10,000x max win, Sanatorium Secrets is more measured than its horror aesthetic suggests, but the Hook mechanic and Puzzle setup give it a mechanical identity that's harder to shake than most Pragmatic releases.

Dragonspire Frostfall (Paperclip Gaming)

Release date: June 1

Dragonspire Frostfall is Paperclip Gaming's most visually polished entry yet, and a significant step up from the original Dragonspire. The setting is a frozen dragon lair, crystalline blues, ornate gold-trimmed frames, icy spires stretching behind the board, and a 2x2 dragon wild that tumbles down through the grid carrying multipliers in its wake. It looks carved rather than drawn, and the cold fantasy aesthetic holds together from background to symbol set without overcrowding the screen.

The cluster pays system runs on tumbling wins, but what keeps it from feeling standard is the powerup system. Two board positions activate each spin, and any winning cluster touching them triggers one of three effects once the tumbles settle, Wild Spawn places 2 to 5 random wilds, Clear removes all low-value symbols, and Freeze locks a sticky wild in place. Those Frozen Wilds then feed into Dragon's Call, a side feature where the 2x2 dragon descends through the board row by row, absorbing locked multipliers as it passes.

Dragon's Call X pushes that further, the dragon enters with a multiplier starting at 25x and reaching up to 100x, which is the screenshot's 100x wild in action. When that lands during a loaded board with Frozen Wilds already placed, the tumble chain that follows can move quickly toward the 20,000x ceiling.

At 96% RTP and high volatility, Dragonspire Frostfall rewards patience in the base game and pays it back properly when the dragon arrives loaded.

Rise of Fortuna (Hacksaw Gaming)

Release date: June 4

Rise of Fortuna is a different mood for Hacksaw Gaming, a Greek-themed slot that's warm and unhurried. Warm and unhurried, Fortuna herself sits cross-legged in a golden circle to the right of the screen, columns frame the reels, clouds drift behind ancient architecture. It's classical mythology rendered in a style that invites you to settle in rather than brace for impact.

The Fortuna Wheels are what the game is built around. Three wheel symbols can land on the leftmost, middle, and rightmost reels, Regular, Super, or Epic, each spinning a 12-segment wheel that awards either additive multipliers building a Cash Prize Bar, or multiplicative values that compound whatever's already accumulated there. The distinction matters. Landing an additive 100x is one thing. Landing a multiplicative 20x on top of an already loaded bar is another entirely.

The jackpot segments sit on every wheel type, Mini at 25x, Major at 100x, Mega at 500x, and the Max Win at 10,000x, adding a jackpot dimension that keeps each wheel spin meaningful beyond the standard multiplier reveals.

Three bonus tiers escalate wheel frequency and quality. Fortune is Blind guarantees three Fortuna Wheels per spin, which at 10 free spins with multiplicative values compounding throughout is where the ceiling becomes genuinely reachable.

At 96.28% RTP and medium volatility, Rise of Fortuna is one of the more accessible games Hacksaw has released recently, approachable without feeling lightweight.

Sanatorium Secrets is this week's pick, and it earns it through mechanics rather than spectacle.

Dragonspire Frostfall has the higher ceiling, Rise of Fortuna is the most accessible of the three, but Sanatorium Secrets is the one that keeps revealing layers the longer you play it. The Hook reshapes the board quietly in a single motion. The tall wild multipliers carry up to 64x. And the Puzzle round that runs before free spins even begin means no two bonuses start in the same shape, the setup phase determines everything.

With a 96.47% RTP and a 10,000x max win, it doesn't shout about what it can do. It just keeps doing more than you expect.

The asylum, the dragon lair, and the goddess's throne room don't have much to say to each other, and that's what makes this week interesting. Sanatorium Secrets hides its best moments behind a Hook that most players won't fully appreciate until it fires at the right time. Dragonspire Frostfall is patient until the dragon drops loaded and then suddenly isn't. Rise of Fortuna lets Fortuna do what she wants, and when she wants a multiplicative 20x on top of a stacked bar, the session remembers it.

Three very different bets on what keeps a player engaged, and all of them land.