Pre-Purchase Offer

Early Access Promise · Buy Once, Upgrade Forever

During EA (~6 months), we will add at least:

• 10–16 new spirits (honor-tile pack + Kong/Discard-flow packs)

• 1 new mechanic framework (Retrigger / Blueprint)

• 20 Challenge stages

• Friend Challenges + Weekly Challenge social layer

• Steam Deck Verified

• Bi-weekly hotfixes + monthly major updates

One purchase, upgrade forever. No DLC, no microtransactions.

About the Game

The world’s first mahjong roguelike featuring dual builds of "waiting tiles x dice". The only mahjong roguelike that lets you roll the dice with your own hands and fight against fate.

Take Balatro's addictive snowball deckbuilding and graft it onto three centuries of mahjong hand-types. 50 spirits, 11 schools, 21 hand-types, 20 bosses, 24 stages + Endless mode. Climb from your first win to Sparrow Master, King, Emperor, all the way to a single-hand 1e15 "Sky-Break".

Real Mahjong · 21 Hand-Types Recognized

Sequence, Triplet, Kong, Pair, Pinfu, Pure Suit, Half Suit, Tanyao, Seven Pairs, Thirteen Orphans (Kokushi), Small/Big Three Dragons, Small/Big Four Winds, All Honors, All Green, Nine Gates, Four Concealed Triplets, Blessing of Earth/Man/Heaven — each hand-type has its own multiplier. Tenpai + win double-activation brings classic mahjong into a roguelike frame.

50 Spirits · 11 Schools · Every Spirit Matters

Wind, Forest, Fire, Mountain, Thunder, Snow, Moon, Sun, Night, Dragon, God — eleven schools, each with signature spirits that combine into countless builds: honor-flow, kong-flow, tenpai-flow, discard-flow...

No bloat — all 50 spirits are verified by 150M Monte Carlo sims to contribute positively in their matching school. No dead cards. Few but fine. The deeper your build, the harder the snowball — millions in one stage, billions in three, Sky-Break at the climax.

Eight Ranks · Snowball + Sky-Break

Eight ranks from beginner to Sparrow Sage; each rank up strengthens bosses, expands the spirit pool, and steepens the reward curve. Endless mode is uncapped — dealer-repeat + Echo spirits stack the snowball higher: Master(1e6) → Grandmaster(1e8) → King(1e10) → Emperor(1e12) → Immortal(1e14) → Sky-Break(≥1e15). Six title banners + share cards let your build become a legend on social media.

Three Game Modes

• Ranked — 8 ranks of linear progression, boss recipes deepen

• Daily Challenge — same global seed, leaderboard, refreshed daily

• Free Mode — pick your school and spirit pool, an open sandbox

Why This Is The Roguelike Mahjong Deserves

• 150M Monte Carlo calibration — all five balance metrics green, zero dead spirits

• 21 hand-types with 100% real mahjong rule recognition — not "looks like mahjong", it IS mahjong

• 20 bosses with restriction mechanics (ban a school / weaken a hand-type / force discards) — builds must evolve

• 33 Steam achievements + Steam Cloud cross-device saves

• Partial controller support + Steam Deck (Verified applied for during EA)

Development Team

LEON LIU GAMES — one indie studio, one core developer, a double love for mahjong and roguelikes. Sparrow God went through 65+ iterations and 150M simulation tests. See you on Steam — be the one who breaks the sky.

Ready? Make all 24 stages your stage, make 1e15 your signature.