Cash Frenzy introduces a system where players land symbols to add them to a collection, which awards the collected symbols' prizes when complete. Plus, DoubleDown offers mystery symbols that reveal other random symbols, and Jackpot World adds continuously increasing multipliers to reels.

A new core-inspired machine has players attack a boss to trigger respins while the boss drops hazards onto the reels. Since players can land symbols that counter the hazards, the machine creates the sense of a dynamic back-and-forth battle.

Monopoly GO! and Royal Match iterate each other’s mini-game mechanics—but the former focuses on deep and active engagement, while the latter focuses on short, frequent breaks from core gameplay.

Duolingo’s DAU grew by nearly 650% over six years by prioritizing daily engagement from current users.

Aqua Match builds on Playrix’s Fishdom by offering more polished match-3 levels and adopting a linear restoration progression similar to apps like Royal Match.

Rollic Games’ Color Block Jam has grown immensely since the start of 2025, becoming the highest-grossing and most downloaded sort app over the past 30 days. The app's unique block puzzles and use of stricter time limits help set it apart from other top sort apps.

Merge Dragons releases a mini-game where players complete tasks listed on a bingo card and earn prizes when they complete lines. Meanwhile, Phase 10 adds a block blast mini-game with multiple progressions, and Words With Friends 2 introduces buffs tied to win streaks.

Royal Match more than triples its weekend revenue by adding a mini-game with physics-based mechanics and evolving level design.

Top apps use bonus items, loyalty programs, and free XP to drive battle pass purchases on web stores.

Dark War Survival closely mirrors the mechanics of other top 4X apps like Whiteout Survival but sets itself apart by using heroes to unlock new base-building areas and offering immersive storytelling with voice-acted dialogue.

Ubisoft’s Rainbow Six Mobile faithfully adapts the franchise’s tactical FPS gameplay to mobile, including team-based combat, destructible environments, and a diverse pool of heroes with unique abilities.

Archero introduces an expansion that includes a tower defense mode with an extensive upgrade tree and its own battle pass. Meanwhile, Call of Duty: Mobile adds a new type of cosmetic progression, and Legend of Slime offers a puzzle mini-game popularized by casual apps.