What is the Peak vs Cliff Controversy?

The “Peak vs Cliff” controversy centers on claims that a Roblox game has blatantly copied one of 2025’s biggest indie hits, sparking debate over game cloning and microtransactions.

Peak vs Cliff (Credit: Aggro Crab/Roblox)

Peak, developed by Aggro Crab Games in collaboration with Landfall, launched for PC in June and became an unexpected sensation. It quickly climbed into Steam’s top 15 most-played titles, surpassing 100,000 concurrent players in its first week and selling over 5 million copies in a month. Its physics-based co-op climbing gameplay, colorful world, and friendly tone made it a standout in the increasingly popular “climb and conquer” subgenre.

But according to a report by PC Gamer, a Roblox title called Cliff, created by developer PewStudio, appears to be more than just “inspired” by Peak—it’s nearly identical in several aspects—hub design, first-person climbing mechanics, and even small details like the luggage at the spawn point and distinctive square stone columns.

Cliff markets itself as “a challenging climbing game where even the smallest mistake can be your downfall” and already boasts over 7,000 active players and 59,000+ favorites on Roblox.

While its developer openly credits Peak and another game, Mountain Climbing, as inspirations, the similarities go far beyond genre.

Aggro Crab also took notice and shared both games' posters on X, telling gamers they’d “rather you pirate our game than play this microtransaction-riddled Roblox slop ripoff.”

Unlike Peak’s one-time purchase, Cliff offers in-game purchases like a climbing pickaxe (200 Robux), a parrot companion (49 Robux), and a golden apple (129 Robux). This combination of copied design and aggressive microtransactions has fueled criticism from the PC gaming community.

While some might see Cliff as just another Roblox homage, others agree with Aggro Crab that it undermines the creative work of original developers, especially when tied to aggressive microtransactions.