Star Vault Guardians: Merge Expedition (星穹塔卫：合成远征)

Star Vault Guardians: Merge Expedition is a portrait, one-handed tower defense + random merge + hero gacha game.

In battle: energy regenerates 1 point per second (cap 30). Spend 3 energy to summon a random 1-star hero from your 6 squad heroes + 2 supports. Drag two identical heroes of the same star together to merge them into a higher star (up to 5, with bold star plates and auras), and every star-up triggers a pick-one-of-three skill upgrade, so the same hero grows differently in every run. On the 4-row × 3-column field, melee heroes belong in front and ranged heroes behind; air enemies can only be hit by anti-air heroes. Hold out for 10 waves to finish the stage. Every hero has a different active skill that plays a skill cut-in animation when it fires, and the monsters now come in many new looks.

Out of battle: draw 44 original heroes (N / R / SR / SSR / UR) across eight factions (Mountain, Windbreath, Shadow, Starfire, Tide, Forestwhisper, Iceland, Thunderarmor) – every faction gained new R / SR / SSR heroes and a UR – and five classes (Guard, Damage, Control, Support, Summon), all shown by their full names. Build a squad, level up, break through, raise skills and gear up, then take on 30 main stages, the Endless Tower and daily resource stages.

Transparent gacha: starter, standard, UP (the featured UR rotates weekly) and faction pools plus a shard shop; soft pity at 60 pulls, hard pity at 80, UP big pity at 160. The rates page opens in one tap from the draw screen, pity counters are always shown, and your last 100 pulls are recorded.

Beginner friendly: your first battle has an interactive tutorial, and the ? button replays the how-to-play guide any time; the game speaks Simplified Chinese, Traditional Chinese and English.

All characters, names and art are original, and gacha uses in-game virtual currency only.